FIELD GUIDESource-led reference
Port & Cable

P119 / Storage / Connector

CompactFlash Type I card interface

CompactFlash Type I is a distinct removable-card form; it should not be confused with CFast or CFexpress.

Also called CF card Compact Flash 50 pin CompactFlash

The word Compact does not identify a card interface.

Look for

Read the full card label, including Type I where documented, and compare the recessed contact end with the reader specification.

Claim inspection dates: 2026-10-03, 2026-10-08, 2026-10-21 · Independent review pending

CompactFlash Type I card interface: three-quarter view. Computer-generated illustration, not a photograph.

Three-quarter view Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

CompactFlash Type I card interface: mating face. Computer-generated illustration, not a photograph.

Mating face Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

CompactFlash Type I card interface: fitted in place. Computer-generated illustration, not a photograph.

Fitted in place Computer-generated illustration with prior AI visual review. Not a photograph, measurement or compatibility check. Independent technical and rights review pending.

CompactFlash Type I card interface: original recognition drawing, not to scale.

Recognition drawing Original schematic, not to scale. Drawing review pending.

Application notes / Camera media / P119

Does “CF reader” mean CFast or CFexpress too?

FIELD NOTES 04

No. Expand the abbreviation to the full card family, then check the exact reader model. A supported-media entry is more useful than a USB connector or a speed label. C119C · C120A · C120B

Cable or component: documented role and remaining check
CheckDocumented distinctionWhat this does not establish
Named CF exampleThe retained RDF8 evidence lists CompactFlash UDMA7. C119CThat listing does not establish CFast or CFexpress support.
CFast is separateCFast has a SATA interface and the new manufacturer passage identifies 24 contacts. C120A · C120CDo not promote a familiar card outline into a reader-compatibility claim.
Full family nameThe association distinguishes CompactFlash, CFast and CFexpress. C120BA CF abbreviation or host-side USB plug does not choose among those media standards.
Read the part and the device.
Read the full family name rather than treating CF as a universal abbreviation.
Keep this requirement open.
CFast or CFexpress support on an unspecified “CF reader” remains unknown.

Not established · named example only

Does RDF8’s CompactFlash listing prove CFast support?

Unknown from that listing: the formats are separate and CFast support is not established.

Boundary. This is insufficient evidence, not a hardware test or explicit manufacturer prohibition.

Next check. Obtain an explicit CFast-supported reader specification.

S439 · S440 · S096 · C119C (private workspace) · C120A (private workspace) · C119B (private workspace)

Before choosing an adapter or reader

  1. Identify the card’s full standard name.
  2. Read the exact reader model’s supported media.
  3. Do not insert a different card family to test compatibility.

Source scope · 14 October 2026. Existing RDF8 findings are retained, not newly verified. The current association public page and Delkin interface passage do not replace reader or camera documentation.

Source-qualified reference, not a pinout, compatibility verdict or installation approval. New claims have separate dates; inherited claim dates and review status remain unchanged. No independent technical or rights approval is implied.

Source trail: S439 · S440 · S096 · S641.

CFast card interface

Read the evidence and its scope · 4 observations

C119A (private workspace) — Transcend describes a 50-pin CompactFlash card and explicitly lists Type I support.

Identification and explicitly scoped documentation only; not an end-to-end connection approval

S847

C119B (private workspace) — The CompactFlash Association identifies CompactFlash with the PATA interface.

Identification and explicitly scoped documentation only; not an end-to-end connection approval

S096

C119C (private workspace) — The RDF8 sheets list CompactFlash UDMA7 separately from SD and microSD UHS-I. The named TS-RDF8K2 / TS-RDF8W2 reader examples do not establish CFast or CFexpress support.

Both sheets PDF page 2 Compatibility and Ordering Information; no Type I/II thickness or electrical assignment adopted.

S439 · S440

C120A (private workspace) — The CompactFlash Association identifies CFast as a Serial ATA card family.

Identification and explicitly scoped documentation only; not an end-to-end connection approval

S096

Source interpretation is not independent engineering review, hardware testing, wiring advice or a public-release approval.

Inspect the illustrationLabel-led card symbol · larger view & look-alikes
CompactFlash Type I card interface — label-led card symbol; card symbol; interface face not shown; label-led symbol, not interface geometry; original, not-to-scale identification schematic; drawing review pending
View Label-led card symbolDepiction Card symbol; interface face not shownSymbol only — not interface geometryNot to scale · independent drawing review pending

Read the view

Read CompactFlash Type I in the written label

Card symbol is upright, with a label block above a dark strip. Neither a mating-face view nor a physical scale is provided.

Label-led symbol — not interface geometry. Read the exact designation and written reference; do not identify a physical connector by this generic shape.

About the marks: The strip is a placeholder, not a contact layout.

What it cannot establish: The dark bar is not a drawing of recessed contacts. Thickness and exact reader support remain unestablished by this symbol.

Enlargement changes display size only. It does not reveal measured geometry, a pin assignment or an approved mating combination.

Compare a likely look-alike

CFast card interface →CFexpress Type B card interface →

Read the underlying references: S096. Artwork interpretation remains review-pending.

How to read connector illustrations →

The useful distinction

Recognize it. Then verify it.

CompactFlash Type I is a distinct removable-card form; it should not be confused with CFast or CFexpress. [C119A]

The CompactFlash Association identifies CompactFlash with the PATA interface. [C119B]

The RDF8 sheets list CompactFlash UDMA7 separately from SD and microSD UHS-I. The named TS-RDF8K2 / TS-RDF8W2 reader examples do not establish CFast or CFexpress support. [C119C]

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 contacts50S847Fifty-contact interface; recessed contacts may not be visible without a manufacturer illustration.
Connector rolecard (TS32GCF800)S920Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. TS32GCF800. Documented role: card. Actual full official2page PDF captured and hashed. Dimensions tuple is explicit, but table does not name width/length axes.; CFA legacy mechanical specifications require non-member purchase; no purchase attempted and no extra pitch/key geometry invented.
ManufacturerTranscend (TS32GCF800)S920Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. TS32GCF800. Documented role: card. Actual full official2page PDF captured and hashed. Dimensions tuple is explicit, but table does not name width/length axes.; CFA legacy mechanical specifications require non-member purchase; no purchase attempted and no extra pitch/key geometry invented.
SeriesCompactFlash800 (TS32GCF800)S920Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. TS32GCF800. Documented role: card. Actual full official2page PDF captured and hashed. Dimensions tuple is explicit, but table does not name width/length axes.; CFA legacy mechanical specifications require non-member purchase; no purchase attempted and no extra pitch/key geometry invented.
Exact part / implementationTS32GCF800 (TS32GCF800)S920Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. TS32GCF800. Documented role: card. Actual full official2page PDF captured and hashed. Dimensions tuple is explicit, but table does not name width/length axes.; CFA legacy mechanical specifications require non-member purchase; no purchase attempted and no extra pitch/key geometry invented.

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

Recorded variant and source limits
  • Neither RDF8 sheet resolves Type I/II thickness, capacity or firmware limits for an arbitrary host.
  • No independently reviewed card dimensions, contact count, contact assignments or tolerance drawing are published in this profile.
  • A bus generation, lane count, VPG class or connector shape is not measured performance or a complete compatibility verdict.
Report a correction to these facts →

Bounded facts, visible unknowns

Specifications and limits

CompactFlash Type I card interface facts and limitations
Documented identificationTranscend describes a 50-pin CompactFlash card and explicitly lists Type I support. [C119A]
Important distinctionThe CompactFlash Association identifies CompactFlash with the PATA interface. [C119B]
Documented distinctionThe RDF8 sheets list CompactFlash UDMA7 separately from SD and microSD UHS-I. The named TS-RDF8K2 / TS-RDF8W2 reader examples do not establish CFast or CFexpress support. [C119C]
Mechanical dimensionsNo independently approved mechanical dimensions. Do not use this record for fabrication or fit testing.
Engineering pinoutSource-checked engineering profile available; independent review pending. Open engineering profile →
Verified device listNot included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.

Record the exact device model and the label beside the port. Obtain its manual and the accessory documentation. Keep unknown properties unknown instead of filling them from a visually similar item.

Before you connect

What to check

  1. Confirm CompactFlash rather than CFast or CFexpress.
  2. Read the reader supported-card list.
  3. Check capacity and camera support separately from the physical form.
Trace a supported connection class →

What is not established

This field note does not approve a connection, publish a pinout or provide a measured template. Use the linked source scope and the checklist as a documentation starting point.

Your next step

Move from the form to the requirement.

Read the engineering reference Source-scoped details, orientation and explicit unknowns.Work through a connection Choose your task before deciding on a cable.Explore this evidence trail Inspect the claims and their dependencies. (private workspace)

The source trail

Evidence for this page

AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.

Back to first citation ↑
C119ASource checked · pending review

Transcend describes a 50-pin CompactFlash card and explicitly lists Type I support.

Transcend Information, Inc. · PCMCIA CompactFlash Adapter TS0MCF2PC ↗

Locator: Key Features:50-pin CompactFlash to68-pin PCMCIA and TypeI; Compatibility: CompactFlash(TypeI); Order Information:TS0MCF2PC.
Access: public page. Adapter's documented support only; no arbitrary device/OS/slot approval, card pinout, measured tolerance, or broad compatibility guarantee. Product photos and certification marks were not copied.

S847: full source recordInspect review dependencies → (private workspace)

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval. Next review due 2027-01-19.

Back to first citation ↑
C119BSource checked · pending review

The CompactFlash Association identifies CompactFlash with the PATA interface.

CompactFlash Association · Card types and form-factor distinctions ↗

Locator: CFexpress Form Factors; Type A versus Type B; Legacy Standards
Access: public page. No copied tables, logos, numeric throughput promises, exhaustive market status or licensed normative specification. Text-only scope.

S096: full source recordInspect review dependencies → (private workspace)

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval. Next review due 2027-01-01.

Back to first citation ↑
C119CSource checked · pending review

The RDF8 sheets list CompactFlash UDMA7 separately from SD and microSD UHS-I. The named TS-RDF8K2 / TS-RDF8W2 reader examples do not establish CFast or CFexpress support.

Transcend · RDF8 product sheet — Transcend-RDF8.pdf ↗

Locator: PDF pages 1–2 visually inspected; card slots, Compatibility, Performance, Ordering Information and three-card insertion wording. No printed revision identifier.
Access: public pdf text. Concurrent-operation wording is compared with S440 and remains unresolved. Document age or hardware revision is not inferred from a filename. No measured aggregate transfer, exact-card or OS certification.

S439: full source recordTranscend · RDF8 product sheet — EN_RDF8_PS_1905.pdf ↗

Locator: PDF pages 1–2 visually inspected: page 1 Additional Features, page 2 Operating Environment Note and Compatibility. Page 3 multi-product comparison not adopted.
Access: public pdf text. Page 1 allows two-card insertion while page 2 says it is unsupported. Kept as an unresolved documentation conflict, not a chosen device capability. Filename is not treated as a verified revision date.

S440: full source recordInspect review dependencies → (private workspace)

Claim scope: Both sheets PDF page 2 Compatibility and Ordering Information; no Type I/II thickness or electrical assignment adopted.. Next review due 2027-01-06.

Suggest a correction to this field note →

Common questions

Questions this record can help resolve

What do UDMA, UHS and USB mean on a multi-card reader?Keep each card slot’s interface separate from the computer connection.

Take this family into a reader workflow.

See documented support, explicit exclusions and remaining unknowns for exact readers.

Explore reader coverage →Start an unsaved worksheet

Put this field note to work.

Add to discovery trayRecord an unsaved candidate (private workspace)

Compare look-alikes: CompactFlash versus CFast

Candidate selection does not confirm the identity or capabilities of your physical item.

Evidence behind this page

Scope first. Source second. Approval separate.

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

Page scope: consumer_reference_expansion

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

Inspect 4 source scopes, access limits and dates

S096 · Card types and form-factor distinctions

CompactFlash Association · Standards-organization domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: CF uses PATA; CFast uses SATA; CFexpress uses PCIe/NVMe; Type B and XQD share a form factor but camera support is conditional.

Not established / limitations: No copied tables, logos, numeric throughput promises, exhaustive market status or licensed normative specification. Text-only scope.

Locator: CFexpress Form Factors; Type A versus Type B; Legacy Standards

S439 · RDF8 product sheet — Transcend-RDF8.pdf

Transcend · Manufacturer / product-owner domain · inspected 2026-10-08 · due 2027-01-06

Within inspection window

Scoped support: TS-RDF8K2 / TS-RDF8W2 selected media slots, CompactFlash UDMA7, SD/microSD UHS-I, USB 3.1 Gen 1 description.

Not established / limitations: Concurrent-operation wording is compared with S440 and remains unresolved. Document age or hardware revision is not inferred from a filename. No measured aggregate transfer, exact-card or OS certification.

Locator: PDF pages 1–2 visually inspected; card slots, Compatibility, Performance, Ordering Information and three-card insertion wording. No printed revision identifier.

S440 · RDF8 product sheet — EN_RDF8_PS_1905.pdf

Transcend · Manufacturer / product-owner domain · inspected 2026-10-08 · due 2027-01-06

Within inspection window

Scoped support: TS-RDF8K2 / TS-RDF8W2 UHS-II cards at UHS-I speeds and contradictory simultaneous-insertion wording.

Not established / limitations: Page 1 allows two-card insertion while page 2 says it is unsupported. Kept as an unresolved documentation conflict, not a chosen device capability. Filename is not treated as a verified revision date.

Locator: PDF pages 1–2 visually inspected: page 1 Additional Features, page 2 Operating Environment Note and Compatibility. Page 3 multi-product comparison not adopted.

S847 · PCMCIA CompactFlash Adapter TS0MCF2PC

Transcend Information, Inc. · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: The full manufacturer product page explicitly states the50-pin CompactFlash card interface and TypeI support for this adapter.

Not established / limitations: Adapter's documented support only; no arbitrary device/OS/slot approval, card pinout, measured tolerance, or broad compatibility guarantee. Product photos and certification marks were not copied.

Locator: Key Features:50-pin CompactFlash to68-pin PCMCIA and TypeI; Compatibility: CompactFlash(TypeI); Order Information:TS0MCF2PC.

Trace 3 claims to their source records

C119A · P119

Transcend describes a 50-pin CompactFlash card and explicitly lists Type I support.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S847 · Evidence trail → (private workspace)

C119B · P119

The CompactFlash Association identifies CompactFlash with the PATA interface.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S096 · Evidence trail → (private workspace)

C119C · P119

The RDF8 sheets list CompactFlash UDMA7 separately from SD and microSD UHS-I. The named TS-RDF8K2 / TS-RDF8W2 reader examples do not establish CFast or CFexpress support.

Claim scope: Both sheets PDF page 2 Compatibility and Ordering Information; no Type I/II thickness or electrical assignment adopted.

Source links: S439 · S440 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)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.