E335 · Source-scoped pinout variants

36-contact MDR / IEEE 1284C form engineering reference

Named wiring from the pinout research; connector shape alone does not establish capabilities.

Open field note Source trail

Source checked · no independent review claimed · Fabrication approved: no

36-contact MDR / IEEE 1284-C engineering reference original orientation schematic — Original pinout diagram; read the exact variant and view below. Not to scale.

Contact count

Not asserted

Source-scoped connector interface

Mating boundary

Shape is not the verdict.

Check the exact device and mating connector.

Orientation

How to read this profile

Read the exact variant view convention. Schematic layouts do not establish physical positions.

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts	36S268Source-backed nominal position/contact count: 36.
Contact pitch	1.27 mm 0.050in series pitch (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
Connector role	plug (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
Manufacturer	3M (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
Series	101 (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
Exact part / implementation	10136-52X2 (normal ordering family) (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.
View convention	Recommended board layout: plug viewed from connector side; receptacle viewed from bottom side. (10136-52X2 (normal right-angle ordering family))S904Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Named series only, not every family part: 10136-52X2 (normal right-angle ordering family). Documented role: plug. Full PDF text read; direct403. Dimension table A-D remains an unmapped drawing axis and is not proposed. Normal and reverse D-interface variants must stay separate.

Not recorded: Positions / cavity span, Populated contacts, Contact rows, Dimensions / axis, Contact gender / arrangement, Mounting, Coupling / latch, Keying / polarization, Shell / form, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits

Check the exact device manual before wiring or applying power.
Tektronix (Xerox) Phaser 350 parallel port (printer side, 36-pin high-density 1284-C receptacle): Contact numbers from the Xerox table; no face drawing.
SGI O2 parallel port (IEEE 1284-C), host side: IEEE 1284-C (36-contact MDR / half-pitch) contact numbers 1-36. No face view transferred.
Tektronix/Xerox Phaser 350X printer parallel port: IEEE 1284-C (36-contact MDR / half-pitch) contact numbers 1-36. No face view transferred.

Report a correction to these facts →

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

Dark pinout view

What the status labels mean

Confirmed: Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source: Only one underlying document, or one pass, supports this assignment.
Device-specific: Supported for the named equipment or wiring only. Check your device’s manual.
Unverified: Missing or conflicting evidence. Do not wire from this row.
Not connected: The source explicitly says NC, no contact or no pin for this wiring.

Wiring variantTektronix (Xerox) Phaser 350 parallel port (printer side, 36-pin hig…

Tektronix (Xerox) Phaser 350 parallel port (printer side, 36-pin high-density 1284-C receptacle)

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Contact numbers from the Xerox table; no face drawing.

P248 IEEE 1284-C (MDR36) — **Agree** on all 36: Tektronix/Xerox Phaser 350 (A) vs SGI O2 (B) — 1 Busy, 2 Select, 3 nAck, 4 nFault, 5 PError, 6â€“13 data 1â€“8, 14 nInit, 15 nStrobe, 16 nSelectIn, 17 nAutoFd, 18 Host Logic High, 19â€“35 returns for pins 1â€“17, 36 Peripheral Logic High. B's Xerox rows are unverified only because that page doesn't name the connector type.
Connector identity (1284-C high density) comes from the Phaser 350 cables-and-adapters page; the pin table page does not itself name the connector.
The table caption says 'other pins are not connected', yet every pin 1-36 appears as a signal or return pin.
IEEE 1284 is paywalled and was not accessed; the only verified variant is the Phaser 350.
No HP or other manufacturer 1284-C table was retrieved.
The Xerox table gives pins 19-35 only as return pins for pins 1-17; whether they are individually grounded in the printer is not stated.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Tektronix (Xerox) Phaser 350 parallel port (printer side, 36-pin high-density 1284-C receptacle) — source-scoped contact map
Pin	Signal	What it does	Status
1	Busy / PtrBusy	Control, detection or configuration connection; check the source and device.	Device-specific Sources
2	Select / Xflag	Control, detection or configuration connection; check the source and device.	Device-specific Sources
3	nAck / PtrClk	Clock or clock-control connection, as named by this source.	Device-specific Sources
4	nFault / nDataAvail	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
5	PError / AckDataReq	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
6	Data 1	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
7	Data 2	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
8	Data 3	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
9	Data 4	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
10	Data 5	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
11	Data 6	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
12	Data 7	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
13	Data 8	Signal conductor. Pair, polarity and direction follow this named wiring.	Device-specific Sources
14	nInit / nHostRTS	Requests permission to send serial data.	Device-specific Sources
15	nStrobe / HostClk	Clock or clock-control connection, as named by this source.	Device-specific Sources
16	nSelectIn / 1284 Active	Control, detection or configuration connection; check the source and device.	Device-specific Sources
17	nAutoFd / HostBusy	Control, detection or configuration connection; check the source and device.	Device-specific Sources
18	Host Logic High	Control, detection or configuration connection; check the source and device.	Device-specific Sources
19	Return for pin 1	Control, detection or configuration connection; check the source and device.	Device-specific Sources
20	Return for pin 2	Control, detection or configuration connection; check the source and device.	Device-specific Sources
21	Return for pin 3	Control, detection or configuration connection; check the source and device.	Device-specific Sources
22	Return for pin 4	Control, detection or configuration connection; check the source and device.	Device-specific Sources
23	Return for pin 5	Control, detection or configuration connection; check the source and device.	Device-specific Sources
24	Return for pin 6	Control, detection or configuration connection; check the source and device.	Device-specific Sources
25	Return for pin 7	Control, detection or configuration connection; check the source and device.	Device-specific Sources
26	Return for pin 8	Control, detection or configuration connection; check the source and device.	Device-specific Sources
27	Return for pin 9	Control, detection or configuration connection; check the source and device.	Device-specific Sources
28	Return for pin 10	Control, detection or configuration connection; check the source and device.	Device-specific Sources
29	Return for pin 11	Control, detection or configuration connection; check the source and device.	Device-specific Sources
30	Return for pin 12	Control, detection or configuration connection; check the source and device.	Device-specific Sources
31	Return for pin 13	Control, detection or configuration connection; check the source and device.	Device-specific Sources
32	Return for pin 14	Control, detection or configuration connection; check the source and device.	Device-specific Sources
33	Return for pin 15	Control, detection or configuration connection; check the source and device.	Device-specific Sources
34	Return for pin 16	Control, detection or configuration connection; check the source and device.	Device-specific Sources
35	Return for pin 17	Control, detection or configuration connection; check the source and device.	Device-specific Sources
36	Peripheral Logic High	Control, detection or configuration connection; check the source and device.	Device-specific Sources

Sources (1)

S806 · Xerox (Tektronix Phaser 350 documentation) · Phaser 350X On-line Reference Guide - Parallel port pin signals (paralle4.htm)
Online HTML reference (no revision stated) · 'Parallel port signals' table (Pin / Signal mode names / Return pin / Signal source / Description)

SGI O2 parallel port (IEEE 1284-C), host side

View and evidence limits

IEEE 1284-C (36-contact MDR / half-pitch) contact numbers 1-36. No face view transferred.

P248 IEEE 1284-C (MDR36) — **Agree** on all 36: Tektronix/Xerox Phaser 350 (A) vs SGI O2 (B) — 1 Busy, 2 Select, 3 nAck, 4 nFault, 5 PError, 6â€“13 data 1â€“8, 14 nInit, 15 nStrobe, 16 nSelectIn, 17 nAutoFd, 18 Host Logic High, 19â€“35 returns for pins 1â€“17, 36 Peripheral Logic High. B's Xerox rows are unverified only because that page doesn't name the connector type.
IEEE 1284 is paywalled and was not read.
Not stated in the Phaser 350X pages read (paralle1-5.htm, parallel.htm); Xerox pages for later Phaser models mention 1284-C cables but were not used as evidence for the 350X.
Only SGI explicitly ties this table to IEEE 1284-C in this pass.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

SGI O2 parallel port (IEEE 1284-C), host side — source-scoped contact map
Pin	Signal	What it does	Status
1	BUSY	Control, detection or configuration connection; check the source and device.	Single source Sources
2	SELECT	Control, detection or configuration connection; check the source and device.	Single source Sources
3	nACK	Control, detection or configuration connection; check the source and device.	Single source Sources
4	nFAULT	Control, detection or configuration connection; check the source and device.	Single source Sources
5	pERROR	Control, detection or configuration connection; check the source and device.	Single source Sources
6	DATA 1	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
7	DATA 2	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
8	DATA 3	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
9	DATA 4	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
10	DATA 5	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
11	DATA 6	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
12	DATA 7	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
13	DATA 8	Signal conductor. Pair, polarity and direction follow this named wiring.	Confirmed Sources
14	nINIT	Control, detection or configuration connection; check the source and device.	Single source Sources
15	nSTROBE	Control, detection or configuration connection; check the source and device.	Single source Sources
16	nSELECTIN	Control, detection or configuration connection; check the source and device.	Single source Sources
17	nAUTOFD	Control, detection or configuration connection; check the source and device.	Single source Sources
18	HOST LOGIC HIGH	Control, detection or configuration connection; check the source and device.	Confirmed Sources
19	SIGNAL GROUND (BUSY)	Control, detection or configuration connection; check the source and device.	Single source Sources
20	SIGNAL GROUND (SELECT)	Control, detection or configuration connection; check the source and device.	Single source Sources
21	SIGNAL GROUND (nACK)	Control, detection or configuration connection; check the source and device.	Single source Sources
22	SIGNAL GROUND (nFAULT)	Control, detection or configuration connection; check the source and device.	Single source Sources
23	SIGNAL GROUND (pERROR)	Control, detection or configuration connection; check the source and device.	Single source Sources
24	SIGNAL GROUND (DATA 1)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
25	SIGNAL GROUND (DATA 2)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
26	SIGNAL GROUND (DATA 3)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
27	SIGNAL GROUND (DATA 4)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
28	SIGNAL GROUND (DATA 5)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
29	SIGNAL GROUND (DATA 6)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
30	SIGNAL GROUND (DATA 7)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
31	SIGNAL GROUND (DATA 8)	Signal conductor. Pair, polarity and direction follow this named wiring.	Single source Sources
32	SIGNAL GROUND (nINIT)	Control, detection or configuration connection; check the source and device.	Single source Sources
33	SIGNAL GROUND (nSTROBE)	Control, detection or configuration connection; check the source and device.	Single source Sources
34	SIGNAL GROUND (nSELECTIN)	Control, detection or configuration connection; check the source and device.	Single source Sources
35	SIGNAL GROUND (nAUTOFD)	Control, detection or configuration connection; check the source and device.	Single source Sources
36	PERIPHERAL LOGIC HIGH	Control, detection or configuration connection; check the source and device.	Confirmed Sources

Sources (2)

S725 · Silicon Graphics · Silicon Graphics O2 Workstation Hardware Reference Guide
Document Number 007-3275-004 (HTML edition) · Appendix A, Table A-2 'Parallel Port (IEEE 1284-C) Pinout Assignments'
S806 · Xerox (Tektronix Phaser 350 documentation) · Phaser 350X On-line Reference Guide - Parallel port pin signals (paralle4.htm)
Online HTML reference (no revision stated) · 'Parallel port signals' table (Pin / Signal mode names / Return pin / Signal source / Description)

Tektronix/Xerox Phaser 350X printer parallel port

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

IEEE 1284-C (36-contact MDR / half-pitch) contact numbers 1-36. No face view transferred.

ExactPhaser350/350X documentation branch. Full manufacturer cable page identifies1284-C; numbered pinout has no physical face drawing.
These rows reproduce the same manufacturer implementation already represented by passA; no independent confirmation or universalIEEE1284-C map is claimed.
Pins19-35 are specified only as returns for1-17. An individual ground connection and current rating are not established.
IEEE1284 normative text was not obtained. Other printers, modes and spatial mating/termination orientation remain outside scope.

Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.

Tektronix/Xerox Phaser 350X printer parallel port — source-scoped contact map
Pin	Signal	What it does	Status
1	Busy/PtrBusy	Printer status to host; Compatibility mode busy/not ready, Nibble mode data3 then7 then busy status.	Device-specific Sources
2	Select/Xflag	Printer status to host; Compatibility mode online, Nibble mode data1 then5.	Device-specific Sources
3	nAck/PtrClk	Printer acknowledgment to host; Compatibility mode low acknowledges transfer, Nibble mode data qualifier.	Device-specific Sources
4	nFault/nDataAvail	Printer status to host; Compatibility mode active-low fault, Nibble mode active-low data-ready then data0/4.	Device-specific Sources
5	PError/AckDataReq	Printer status to host; Compatibility mode printer/media error, Nibble mode data2 then6.	Device-specific Sources
6	Data 1	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
7	Data 2	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
8	Data 3	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
9	Data 4	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
10	Data 5	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
11	Data 6	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
12	Data 7	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
13	Data 8	Host to printer positive-true data input in Compatibility mode; not used in Nibble mode.	Device-specific Sources
14	nInit/nHostRTS	Host to printer active-low interface reset in Compatibility mode; positive in Nibble mode.	Device-specific Sources
15	nStrobe/HostClk	Host to printer transfer strobe; printer input latch uses rising edge as described by the manufacturer.	Device-specific Sources
16	nSelectIn/1284 Active	Host to printer select in Compatibility mode; Nibble-mode hardware handshaking with HostBusy.	Device-specific Sources
17	nAutoFd/HostBusy	Host to printer; unused in Compatibility mode, Nibble-mode hardware handshaking with1284Active.	Device-specific Sources
18	Host Logic High	Host status to printer: high indicates host signals valid, low indicates invalid. No supply-current rating is established.	Device-specific Sources
19	Return for pin 1	Manufacturer identifies the return contact for pin 1. An individual ground bond or current rating is not established.	Device-specific Sources
20	Return for pin 2	Manufacturer identifies the return contact for pin 2. An individual ground bond or current rating is not established.	Device-specific Sources
21	Return for pin 3	Manufacturer identifies the return contact for pin 3. An individual ground bond or current rating is not established.	Device-specific Sources
22	Return for pin 4	Manufacturer identifies the return contact for pin 4. An individual ground bond or current rating is not established.	Device-specific Sources
23	Return for pin 5	Manufacturer identifies the return contact for pin 5. An individual ground bond or current rating is not established.	Device-specific Sources
24	Return for pin 6	Manufacturer identifies the return contact for pin 6. An individual ground bond or current rating is not established.	Device-specific Sources
25	Return for pin 7	Manufacturer identifies the return contact for pin 7. An individual ground bond or current rating is not established.	Device-specific Sources
26	Return for pin 8	Manufacturer identifies the return contact for pin 8. An individual ground bond or current rating is not established.	Device-specific Sources
27	Return for pin 9	Manufacturer identifies the return contact for pin 9. An individual ground bond or current rating is not established.	Device-specific Sources
28	Return for pin 10	Manufacturer identifies the return contact for pin 10. An individual ground bond or current rating is not established.	Device-specific Sources
29	Return for pin 11	Manufacturer identifies the return contact for pin 11. An individual ground bond or current rating is not established.	Device-specific Sources
30	Return for pin 12	Manufacturer identifies the return contact for pin 12. An individual ground bond or current rating is not established.	Device-specific Sources
31	Return for pin 13	Manufacturer identifies the return contact for pin 13. An individual ground bond or current rating is not established.	Device-specific Sources
32	Return for pin 14	Manufacturer identifies the return contact for pin 14. An individual ground bond or current rating is not established.	Device-specific Sources
33	Return for pin 15	Manufacturer identifies the return contact for pin 15. An individual ground bond or current rating is not established.	Device-specific Sources
34	Return for pin 16	Manufacturer identifies the return contact for pin 16. An individual ground bond or current rating is not established.	Device-specific Sources
35	Return for pin 17	Manufacturer identifies the return contact for pin 17. An individual ground bond or current rating is not established.	Device-specific Sources
36	Peripheral Logic High	Printer status to host: high indicates printer on, low printer off. No supply-current rating is established.	Device-specific Sources

Sources (3)

S808 · Xerox (Tektronix Phaser 350 support pages) · Phaser 350X: Parallel port pin signals (paralle4.htm)
No revision printed (HTML support page) · 'Parallel port signals' table (pin, signal mode names, return pin, signal source, description)
S807 · Xerox (Tektronix Phaser 350 documentation) · Phaser 350X User documentation - Interface cables and adapters (supplie7.htm)
Online HTML reference (no revision stated) · Interface cables and adapters, orders012-1468-00 and013-0299-00; exactP350X user-manual branch
S880 · Xerox (Tektronix Phaser350 documentation) · Phaser350X User Documentation: Connecting the printer
OnlineHTML manual; no numbered revision stated · Connecting the printer, Printer ports/Parallel connection; sameP350X manual links to pinout reference

Unknowns stay unknown.

Check the exact device manual before wiring or applying power.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C808Nsource checked

Tektronix (Xerox) Phaser 350 parallel port (printer side, 36-pin high-density 1284-C receptacle): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Xerox (Tektronix Phaser 350 documentation) · Phaser 350X On-line Reference Guide - Parallel port pin signals (paralle4.htm) ↗
'Parallel port signals' table (Pin / Signal mode names / Return pin / Signal source / Description) · Source scope and unresolved evidence are preserved in the engineering variant.

Xerox (Tektronix Phaser 350 documentation) · Phaser 350X User documentation - Interface cables and adapters (supplie7.htm) ↗
'Interface cables and adapters' table: 012-1468-00 '36-pin high-density plug to 25-pin DSUB plug' and 013-0299-00 'Converts 36-pin low-density 1284-B plug to 36-pin high-density 1284-C plug' for 'the printer's high-density parallel connector' · Source scope and unresolved evidence are preserved in the engineering variant.

C808Osource checked

SGI O2 parallel port (IEEE 1284-C), host side: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Silicon Graphics · Silicon Graphics O2 Workstation Hardware Reference Guide ↗
Appendix A, Table A-1 'Serial Port Pinout Assignments'; Appendix A, Table A-2 'Parallel Port (IEEE 1284-C) Pinout Assignments'; Appendix A, Table A-4 'Keyboard and Mouse Ports (6-pin MINIDIN) Pinout Assignments' · Source scope and unresolved evidence are preserved in the engineering variant.

C808Psource checked

Tektronix/Xerox Phaser 350X printer parallel port: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Xerox (Tektronix Phaser 350 support pages) · Phaser 350X: Parallel port pin signals (paralle4.htm) ↗
'Parallel port signals' table (pin, signal mode names, return pin, signal source, description) · Source scope and unresolved evidence are preserved in the engineering variant.

Xerox (Tektronix Phaser350 documentation) · Phaser350X User Documentation: Connecting the printer ↗
Printer ports/Parallel(standard) and Parallel connection; 36-pin high-density printer to25-pinDSUB PC cable; link to On-lineReferenceGuide pinout · Read with same-branch S807 connector/cable identity and S808 numbered signal table. No mating-face or wire-entry layout supplied.

5 source records support this profile. No independent engineering review or hardware validation is claimed.

Evidence behind this page

Scope first. Source second. Approval separate.

5 linked sources · 3 scoped claims · 0 sources with inspection/access flags.

Page scope: Original schematic; not to scale and not fabrication approval.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-19. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 5 source scopes, access limits and dates

S725 · Silicon Graphics O2 Workstation Hardware Reference Guide

Silicon Graphics · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: Appendix A, Table A-1 'Serial Port Pinout Assignments'; Appendix A, Table A-2 'Parallel Port (IEEE 1284-C) Pinout Assignments'; Appendix A, Table A-4 'Keyboard and Mouse Ports (6-pin MINIDIN) Pinout Assignments'

S806 · Phaser 350X On-line Reference Guide - Parallel port pin signals (paralle4.htm)

Xerox (Tektronix Phaser 350 documentation) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: 'Parallel port signals' table (Pin / Signal mode names / Return pin / Signal source / Description)

S807 · Phaser 350X User documentation - Interface cables and adapters (supplie7.htm)

Xerox (Tektronix Phaser 350 documentation) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: 'Interface cables and adapters' table: 012-1468-00 '36-pin high-density plug to 25-pin DSUB plug' and 013-0299-00 'Converts 36-pin low-density 1284-B plug to 36-pin high-density 1284-C plug' for 'the printer's high-density parallel connector'

S808 · Phaser 350X: Parallel port pin signals (paralle4.htm)

Xerox (Tektronix Phaser 350 support pages) · Unclassified publisher domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: 'Parallel port signals' table (pin, signal mode names, return pin, signal source, description)

S880 · Phaser350X User Documentation: Connecting the printer

Xerox (Tektronix Phaser350 documentation) · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Exact Phaser350/350X printer parallel-port context only; no universalIEEE1284-C pinout or physical face.

Not established / limitations: Read with same-branch S807 connector/cable identity and S808 numbered signal table. No mating-face or wire-entry layout supplied.

Locator: Printer ports/Parallel(standard) and Parallel connection; 36-pin high-density printer to25-pinDSUB PC cable; link to On-lineReferenceGuide pinout

Trace 3 claims to their source records

C808N · P248

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S806 · S807 · Evidence trail → (private workspace)

C808O · P248

SGI O2 parallel port (IEEE 1284-C), host side: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S725 · S806 · Evidence trail → (private workspace)

C808P · P248

Tektronix/Xerox Phaser 350X printer parallel port: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S808 · S807 · S880 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.