E260 · Source-scoped pinout variants

12V-2x6 16-circuit PCIe power connector engineering reference

Molex 2191161161 documents a 16-circuit, three-row 12V-2x6 header with 12 power plus 4 signal circuits, 3.00 mm mating pitch, polarization and first-mate/last-break behavior.

Open field note Source trail

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

12V-2x6 16-circuit mechanical/interface boundary original orientation schematic — Original pinout diagram; read the exact variant and view below. Not to scale.

Contact count

16

PCIe CEM5 12V-2x6 add-in-card header interface

Mating boundary

Shape is not the verdict.

Molex 219116-series 12V-2x6 header ↔ compatible 219114-series receptacle housing

Orientation

How to read this profile

The component is a right-angle male shrouded header; V44 does not publish a numbered mating-face locator or import the older 12VHPWR logical assignment.

Bounded dimensions

Only what the sources support

Source-scoped dimensions; not fabrication clearances
Field	Value	Scope	Evidence
Mating-interface pitch	3 mm	example component	[C260B]

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	16S280Source-backed nominal position/contact count: 16.
Positions / cavity span	16 (Claim C260A); 16 (Claim C260B)S280 · S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Populated contacts	16 (2191161161)S280Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 2191161161: 12V-2x6 right-angle through-hole male board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Mixed-contact3rows coexist with two main power rows; do not overwrite every scoped row value. No universal cablecapacity assigned.
Contact rows	3 (Molex2191161161)S291Qualified exact source facts only; counterpart, mounting-acceptance, cable, port, termination and assembly context remains separately labelled in variant_notes. Exact Molex2191161161 male right-angle12V-2x6 header; manufacturer property only, separate from literal form-name2x6 and12power+4signal arithmetic. Quantity context: Manufacturer Number Of Rows property.
Contact pitch	3 mm Mating-interface pitch (Recorded example component); 3 mm Source-described pitch / centerline (Claim C260B)S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. example_component; PCIe CEM5 12V-2x6 add-in-card header interface V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Dimensions / axis	3.18 mm PCB tail length (2191161161)S280Separate exact examples; retain each value’s source, role, axis and part scope. Exact named example 2191161161: 12V-2x6 right-angle through-hole male board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Mixed-contact3rows coexist with two main power rows; do not overwrite every scoped row value. No universal cablecapacity assigned.
Connector role	header; header (Molex 2191161161)S280 · S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. PCIe CEM5 12V-2x6 add-in-card header interface V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Contact gender / arrangement	male (Molex 2191161161)S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Mounting	board (Claim C260C); board (Claim C260D); right-angle through-hole board connector (2191161161)S561 · S561 · S280Separate exact examples; retain each value’s source, role, axis and part scope. Printed page 63, qualitative difference only. No contact lengths, dimensional tolerance, unknown-part classification or seating verdict is supplied. Printed page 63. This described arrangement does not mean every PSU provides that interface or accepts an arbitrary cable. Exact named example 2191161161: 12V-2x6 right-angle through-hole male board header. Exact example only; no universal geometry, electrical compatibility, fabrication approval or wiring instruction. Mixed-contact3rows coexist with two main power rows; do not overwrite every scoped row value. No universal cablecapacity assigned.
Keying / polarization	keying: no (Molex 2191161161); polarization: yes (Molex 2191161161)S563Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Exact text fields only, including their naming distinction. Uninspected geometry and mating suitability remain unknown; inherited generation observations are not silently revised.
Manufacturer	Molex (2191161161)S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Series	12V-2x6 (2191161161)S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.
Exact part / implementation	2191161161 (2191161161)S291Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval.

Not recorded: Coupling / latch, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits

The ATX 3.0 12VHPWR logical contact map in P193 is not assumed to be the 12V-2x6 assignment.
No safe-power calculation, current derating, cable-bend rule, insertion-depth acceptance criterion or installation approval is published here.
Component current/voltage ratings and an actual PSU/GPU cable assembly must be evaluated from current manufacturer documentation.
Intel ATX v3 rev 2.1a 12V-2x6 cable plug / PCB header: Identifiers per Table 5-7.
Intel guide rev 2.1a 12V-2x6: Intel Figure 5-6 explicitly labels PCB Header Dimensions — Front View, sideband below: pin 1 lower right, pin 6 lower left, pin 7 upper right, pin 12 upper left; S1 right, S4 left. This is the header face, not the plug face.
Retained rows context (excluded from normalized contact/body field): 2. V43 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction, protocol guarantee or end-to-end compatibility proof. Sources: S280: Part details and PCIe CEM5 12V2x6 product specification
Retained rows context (excluded from normalized contact/body field): 3. Molex specifies 2191161161 as a right-angle, male, shrouded three-row 12V-2x6 header with 16 circuits arranged as 12 power plus 4 signal, a 3.00 mm mating pitch, polarization to the mating part and first-mate/last-break behavior. | V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval. Sources: S291: Part details and product customer drawing 2191160001-SD
Retained rows context (excluded from normalized contact/body field): 2. V44 component-level mechanical/interface boundary only; no 12VHPWR pin-map carryover, safe-power calculation, insertion-depth approval, cable-bend rule or installation approval. Sources: S291: Part details and product customer drawing 2191160001-SD
Retained rows context (excluded from normalized contact/body field): 2. Printed page 63, qualitative difference only. No contact lengths, dimensional tolerance, unknown-part classification or seating verdict is supplied. Sources: S561: Revision 2.11 / May 2024. Printed pages 17, 58, 59 and 63 visually inspected; page 63 special note compares 12V-2x6 and earlier 12VHPWR.
Retained rows context (excluded from normalized contact/body field): 2. Printed page 63. This described arrangement does not mean every PSU provides that interface or accepts an arbitrary cable. Sources: S561: Revision 2.11 / May 2024. Printed pages 17, 58, 59 and 63 visually inspected; page 63 special note compares 12V-2x6 and earlier 12VHPWR.

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 variantIntel ATX v3 rev 2.1a 12V-2x6 cable plug / PCB header

Intel ATX v3 rev 2.1a 12V-2x6 cable plug / PCB header

View and evidence limits

Identifiers per Table 5-7.

P260 12V-2x6 — **Agree** on all 16 identifiers — Both rely on Intel rev 2.1a, PDF versus HTML; **same-document agreement only**. Contacts 1-6 +12 V, 7-12 return; S1 CARD_PWR_STABLE, S2 CARD_CBL_PRES#, S3 SENSE0, S4 SENSE1. B explicitly records the PCB-header front view; that drawing must not be copied as the cable-plug face.
PCI-SIG CEM 5.1 (the normative source Intel references for the sideband electrical requirements) is member-only and was not read.

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

Intel ATX v3 rev 2.1a 12V-2x6 cable plug / PCB header — source-scoped contact map
Pin	Signal	What it does	Status
1	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
2	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
3	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
4	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
5	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
6	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
7	COM	Ground reference and return.	Single source Sources
8	COM	Ground reference and return.	Single source Sources
9	COM	Ground reference and return.	Single source Sources
10	COM	Ground reference and return.	Single source Sources
11	COM	Ground reference and return.	Single source Sources
12	COM	Ground reference and return.	Single source Sources
S1	CARD_PWR_STABLE	Control, detection or configuration connection; check the source and device.	Single source Sources
S2	CARD_CBL_PRES#	Control, detection or configuration connection; check the source and device.	Single source Sources
S3	SENSE0	Control, detection or configuration connection; check the source and device.	Single source Sources
S4	SENSE1	Control, detection or configuration connection; check the source and device.	Single source Sources

Sources (1)

S755 · Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide
Document 336521, Revision 2.1a, November 2023 · Section 5.2.2.4.3, Table 5-7 PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts), printed p. 66; sideband definitions Section 3.3 and Table 3-6, printed pp. 29-32

Intel guide rev 2.1a 12V-2x6

View and evidence limits

Intel Figure 5-6 explicitly labels PCB Header Dimensions — Front View, sideband below: pin 1 lower right, pin 6 lower left, pin 7 upper right, pin 12 upper left; S1 right, S4 left. This is the header face, not the plug face.

P260 12V-2x6 — **Agree** on all 16 identifiers — Both rely on Intel rev 2.1a, PDF versus HTML; **same-document agreement only**. Contacts 1-6 +12 V, 7-12 return; S1 CARD_PWR_STABLE, S2 CARD_CBL_PRES#, S3 SENSE0, S4 SENSE1. B explicitly records the PCB-header front view; that drawing must not be copied as the cable-plug face.
Main power positions are all connected in the documented cable. Sideband contacts are signal circuits.
Table 3-6 SENSE0/SENSE1: ground/ground = 375 W initial / 600 W sustained; open/ground = 225/450 W; ground/open = 150/300 W.
Short SENSE0 to SENSE1 while both float from ground = 100 W initial / 150 W sustained. Open/open = 0 W initial and sustained.
Modular supplies configure these states inside the supply. Figure 5-3 has two cable-plug shroud options but gives no different pin assignment. Intel describes H++ marking and changed main/sideband contact lengths in the PCB header.
CEM full text, unnamed device optional sideband support, actual cable assemblies, proprietary PSU ends and connector qualification remain unverified.

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

Intel guide rev 2.1a 12V-2x6 — source-scoped contact map
Pin	Signal	What it does	Status
1	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
2	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
3	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
4	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
5	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
6	+12V3/V4	Power connection (+12V3/V4). Check the specified supply.	Single source Sources
7	COM	Ground reference and return.	Single source Sources
8	COM	Ground reference and return.	Single source Sources
9	COM	Ground reference and return.	Single source Sources
10	COM	Ground reference and return.	Single source Sources
11	COM	Ground reference and return.	Single source Sources
12	COM	Ground reference and return.	Single source Sources
S1	CARD_PWR_STABLE	Control, detection or configuration connection; check the source and device.	Single source Sources
S2	CARD_CBL_PRES#	Control, detection or configuration connection; check the source and device.	Single source Sources
S3	SENSE0	Control, detection or configuration connection; check the source and device.	Single source Sources
S4	SENSE1	Control, detection or configuration connection; check the source and device.	Single source Sources

Sources (4)

S764 · Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide
2.1a; web date 11/01/2023 · Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View
S822 · Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide
2.1a; web date 11/01/2023 · PCI Express Add-in Card Considerations > sideband signals > CARD_PWR_STABLE (Optional), function and implementation paragraphs
S823 · Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide
2.1a; web date 11/01/2023 · PCI Express Add-in Card Considerations > sideband signals > CARD_CBL_PRES#, Primary Function, Secondary Function and termination paragraphs
S824 · Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide
2.1a; web date 11/01/2023 · PCI Express Add-in Card Considerations > sideband signals > SENSE0 & SENSE1 (Required), Table 3-6 and configuration paragraphs

Unknowns stay unknown.

The ATX 3.0 12VHPWR logical contact map in P193 is not assumed to be the 12V-2x6 assignment.
No safe-power calculation, current derating, cable-bend rule, insertion-depth acceptance criterion or installation approval is published here.
Component current/voltage ratings and an actual PSU/GPU cable assembly must be evaluated from current manufacturer documentation.

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

C260Asource checked

Molex identifies part 2191161161 as a PCIe CEM5 12V-2x6 header with 16 circuits, configured as 12 power and 4 signal circuits.

Molex · Micro-Fit+ PCIe CEM5 12V-2x6 header ↗
Part details and PCIe CEM5 12V2x6 product specification · Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Back to first citation ↑

C260Bsource checked

Molex specifies 2191161161 as a right-angle, male, shrouded three-row 12V-2x6 header with 16 circuits arranged as 12 power plus 4 signal, a 3.00 mm mating pitch, polarization to the mating part and first-mate/last-break behavior.

Molex · Micro-Fit+ PCIe CEM5 12V-2x6 header engineering details ↗
Part details and product customer drawing 2191160001-SD · V44 does not copy a 12VHPWR logical pinout onto 12V-2x6, does not calculate safe power, and does not publish insertion-depth, bend-radius or assembly approval.

C809Hsource checked

Intel ATX v3 rev 2.1a 12V-2x6 cable plug / PCB header: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Revision history entry for 2.1 (printed p. 13): 12VHPWR renamed 12V-2x6 throughout, 'Cable Plug' side unchanged; Section 5.2.2.4.3 'Special Note on 12V-2x6 vs. 12VHPWR connectors' (printed p. 61); Table 5-7 (printed p. 66); Section 5.2.2.1, Table 5-1 Main Power Connector Pin-Out, printed p. 55; Section 5.2.2.2 Peripheral Connectors (AMP 1-480424-0 or Molex 15-24-4048), Table 5-2 Peripheral Connector Pin-out, printed pp. 55-56; Section 5.2.2.3 Floppy Drive Connector - Do Not Include (For Historical Reference Only), AMP 171822-4, Table 5-3 Floppy Connector Pin-out, printed p. 56; Section 5.2.2.4.1, Table 5-4 PCIe 2x3 Auxiliary Power Connector Pin Assignment (75 watts) and note 2, printed p. 57; Section 5.2.2.4.2, Table 5-5 PCIe 2x4 Auxiliary Power Connector Pin Assignment (150 Watts) and Table 5-6 Sense Pin Decoding, printed p. 58; Section 5.2.2.4.3, Table 5-7 PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts), printed p. 66; sideband definitions Section 3.3 and Table 3-6, printed pp. 29-32; Section 5.2.2.5, Table 5-9 +12 V Power 8 pin Connector Pin-Out, printed p. 67 · Source scope and unresolved evidence are preserved in the engineering variant.

C809Isource checked

Intel guide rev 2.1a 12V-2x6: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, 12V-2x6 subsection, Table 5-7: PCIe 12V-2x6 Auxiliary Power Connector Pin Assignment (600 watts); Figure 5-6: PCB Header Dimensions — Front View; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x3 subsection, Table 5-4 and following Sense paragraph; Mechanical > Connectors > DC Connectors > PCI-Express Add-in Card Connectors, PCIe 2x4 subsection, Tables 5-5 and 5-6 and adjacent sense-grounding paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
PCI Express Add-in Card Considerations > sideband signals > CARD_PWR_STABLE (Optional), function and implementation paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
PCI Express Add-in Card Considerations > sideband signals > CARD_CBL_PRES#, Primary Function, Secondary Function and termination paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

Intel Corporation · ATX Version 3 Multi Rail Desktop Platform Power Supply Design Guide ↗
PCI Express Add-in Card Considerations > sideband signals > SENSE0 & SENSE1 (Required), Table 3-6 and configuration paragraphs · Source scope and unresolved evidence are preserved in the engineering variant.

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

Evidence behind this page

Scope first. Source second. Approval separate.

7 linked sources · 4 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V44 12V-2x6 engineering-boundary schematic; not to scale and not an installation, wiring or manufacturing drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-04. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 7 source scopes, access limits and dates

S280 · Micro-Fit+ PCIe CEM5 12V-2x6 header

Molex · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Identifies a 16-circuit PCIe CEM5 12V-2x6 header with 12 power and 4 signal circuits. V43 does not generalize current capacity or approve cabling.

Not established / limitations: Identification/reference scope only. V43 does not convert this source into a universal pinout, fabrication drawing, electrical approval, protocol guarantee or end-to-end compatibility verdict.

Locator: Part details and PCIe CEM5 12V2x6 product specification

S291 · Micro-Fit+ PCIe CEM5 12V-2x6 header engineering details

Molex · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Engineering-scoped inspection of Molex 2191161161: 16 circuits arranged as 12 power plus 4 signal, three rows, 3.00 mm mating pitch, right-angle male shrouded header, polarization and first-mate/last-break property.

Not established / limitations: V44 does not copy a 12VHPWR logical pinout onto 12V-2x6, does not calculate safe power, and does not publish insertion-depth, bend-radius or assembly approval.

Locator: Part details and product customer drawing 2191160001-SD