FIELD GUIDESource-led reference

Documented products, not rankings

Check the reader model.

Family support is model-specific. This directory is alphabetical, not a shopping recommendation or a compatibility ranking.

Read the scope, not just the badge.

Documented family, explicit exclusion and missing documentation are different states. A product absent from this directory has not been evaluated here.

11 reader profiles · snapshot 2026-10-15

Kingston / reader

Kingston Workflow microSD Reader (WFS-SDC)

Two microSD slots

microSD card form

2 physical slots. S110

Model scope, caveats and source dates

Kingston Workflow microSD Reader (WFS-SDC) only. Do not substitute a similarly named reader, later revision or regional bundle.

  • This is WFS-SDC, not the separate WFS-SD full-size SD reader.
  • Standalone USB-C use is documented; card-adapter scenarios are not silently added.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S110 · S111

Kingston / reader

Kingston Workflow SD Reader (WFS-SD)

Two SD slots

Full-size SD card form

2 physical slots. S110

Model scope, caveats and source dates

Kingston Workflow SD Reader (WFS-SD) only. Do not substitute a similarly named reader, later revision or regional bundle.

  • This is WFS-SD, not the separate WFS-SDC microSD reader.
  • Standalone USB-C use is documented; two slots do not establish independent full-rate transfers.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S110 · S111

Lexar / reader

Lexar Professional CFexpress Type A / SD USB 3.2 Gen 2 Reader

P121 media group — arrangement unverified

CFexpress Type A card interface

Physical opening count and shared arrangement are not established in the inspected text. S113

P061 media group — arrangement unverified

Full-size SD card form

Physical opening count and shared arrangement are not established in the inspected text. S113

Model scope, caveats and source dates

Lexar Professional CFexpress Type A / SD USB 3.2 Gen 2 Reader only. Do not substitute a similarly named reader, later revision or regional bundle.

  • Scope is the named USB 3.2 Gen 2 Type A / SD product, not another Lexar reader.
  • USB-C shape and the interface generation do not approve an exact card, operating system or transfer speed.
  • The inspected text establishes supported families, not the physical number or shared arrangement of media openings. The atlas does not infer that arrangement from product names.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S113

OWC / reader

OWC Atlas Dual CFexpress + SD

CFexpress Type B slot

CFexpress Type B card interface

1 physical slot. S115

SDXC slot

Full-size SD card form

1 physical slot. S115

Model scope, caveats and source dates

OWC Atlas Dual CFexpress + SD only. Do not substitute a similarly named reader, later revision or regional bundle.

  • The integrated USB-C cable and secondary USB-C port provide alternative upstream arrangements; this topology is not reduced to one detachable-cable endpoint.
  • Choose the documented upstream arrangement and follow the exact product instructions; no automatic handoff is offered.

No automatic USB handoff. Camera direct transfer, USB4 negotiation and alternate or captive upstream topology require a separate documented workflow.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S115

ProGrade Digital / reader

ProGrade Digital PG05.5

CFexpress Type B slot

CFexpress Type B card interface

1 physical slot. S107

SDXC slot

Full-size SD card form

1 physical slot. S107

Explicit exclusions: XQD card interface — The manufacturer explicitly excludes XQD. S107

Model scope, caveats and source dates

ProGrade Digital PG05.5 only. Do not substitute a similarly named reader, later revision or regional bundle.

  • Check the PG05.5 serial-number-scoped firmware advisory before relying on the reader. Do not install an update from this worksheet.
  • Eject through the operating system and follow the reader instructions before removing media.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S107 · S108

ProGrade Digital / reader

ProGrade Digital PG05.7

CFexpress Type B slot

CFexpress Type B card interface

1 physical slot. S114

SDXC slot

Full-size SD card form

1 physical slot. S114

Explicit exclusions: XQD card interface — The manufacturer explicitly excludes XQD. S114

Model scope, caveats and source dates

ProGrade Digital PG05.7 only. Do not substitute a similarly named reader, later revision or regional bundle.

  • This USB4 reader is outside the ordinary direct USB-data handoff model; negotiate modes, host and cable from its documentation.
  • Do not substitute the older PG05.5 profile or assume a USB fallback mode.

No automatic USB handoff. Camera direct transfer, USB4 negotiation and alternate or captive upstream topology require a separate documented workflow.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S114

SanDisk / reader

SanDisk ImageMate PRO USB-C (SDDR-A631-GNGNN)

P061 media group — arrangement unverified

Full-size SD card form

Physical opening count and shared arrangement are not established in the inspected text. S109

P062 media group — arrangement unverified

microSD card form

Physical opening count and shared arrangement are not established in the inspected text. S109

P119 media group — arrangement unverified

CompactFlash Type I card interface

Physical opening count and shared arrangement are not established in the inspected text. S109

Model scope, caveats and source dates

SanDisk ImageMate PRO USB-C (SDDR-A631-GNGNN) only. Do not substitute a similarly named reader, later revision or regional bundle.

  • CompactFlash is not CFast or CFexpress; missing support for those families is not inferred as a tested exclusion.
  • The published interface and card rates are not a measured end-to-end result.
  • The inspected text establishes supported families, not the physical number or shared arrangement of media openings. The atlas does not infer that arrangement from product names.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S109

SanDisk Professional / reader

SanDisk Professional PRO-READER CFast

P120 media group — arrangement unverified

CFast card interface

Physical opening count and shared arrangement are not established in the inspected text. S112

Model scope, caveats and source dates

SanDisk Professional PRO-READER CFast only. Do not substitute a similarly named reader, later revision or regional bundle.

  • Scope: model SDPR2E8-0000-GBAND. The write-protect switch does not replace independent backup verification.
  • CFast and CFexpress are separate families; a similar name is not reader support.
  • The inspected text establishes supported families, not the physical number or shared arrangement of media openings. The atlas does not infer that arrangement from product names.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S112

Sony / reader

Sony MRW-G1

Documented media group — arrangement unverified

CFexpress Type B card interface · XQD card interface

Physical opening count and shared arrangement are not established in the inspected text. S106

Model scope, caveats and source dates

Sony MRW-G1 only. Do not substitute a similarly named reader, later revision or regional bundle.

  • XQD support is scoped to Sony G- and M-series; do not generalize to every XQD card.
  • Verify software, exact card and cable before a real transfer.
  • The inspected text establishes supported families, not the physical number or shared arrangement of media openings. The atlas does not infer that arrangement from product names.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-03 · review due 2027-01-01 · independent review pending.

S106

Sony / reader

Sony MRW-G2

Reader-specific limit

The MRW-G2 instructions show CFexpress Type A and SD as alternatives in the reader’s shared slot and prohibit inserting two memory cards into that slot at the same time. Two supported families are not two independent openings.

Read the supporting evidence → (private workspace)

Shared CFexpress Type A / SD slot — one card at a time

CFexpress Type A card interface · Full-size SD card form

1 physical slot · alternative families use the same slot. S105 · S438

Model scope, caveats and source dates

Sony MRW-G2 only. Do not substitute a similarly named reader, later revision or regional bundle.

  • Check the exact card and operating system against current Sony documentation.
  • USB interface rate does not establish sustained card-to-computer transfer speed.
  • MRW-G2 has one shared card slot for the documented CFexpress Type A or SD alternatives. Sony prohibits inserting two cards in it at once; see instructions 5-019-283-B1 (1).
  • Sony does not guarantee operation with all memory cards or all computers; follow its supplied-cable and supported-environment requirements.

Direct USB data worksheet available after selecting a documented host; no cable, power, software or card qualification is pre-approved.

Profile inspected 2026-10-08 · review due 2027-01-06 · independent review pending.

S105 · S438

Transcend / reader

Transcend RDF8 (TS-RDF8K2 / TS-RDF8W2)

Reader-specific limit

RDF8 documentation disagrees about simultaneous insertion: EN_RDF8_PS_1905 allows two cards on page 1 but says simultaneous two-card insertion is unsupported on page 2; Transcend-RDF8 describes three on page 1. This reference leaves concurrent operation unresolved.

Read the supporting evidence → (private workspace)

SD / SDHC / SDXC slot

Full-size SD card form

1 physical slot. S439 · S440

microSD slot

microSD card form

1 physical slot. S439 · S440

CompactFlash slot

CompactFlash Type I card interface

1 physical slot. S439 · S440

Model scope, caveats and source dates

RDF8 TS-RDF8K2 / TS-RDF8W2 as named in the cited sheets; hardware revision correspondence unresolved.

  • The two sheets identify TS-RDF8K2 / TS-RDF8W2 and the selected media families. No capabilities are inherited from RDF9, RDF2 or other entries in a comparison chart.
  • Simultaneous operation is unresolved: the sheets disagree about two-card/three-card insertion and include a contrary no-two-card note. Do not infer parallel read/write or aggregate throughput.
  • The USB interface is documented as USB 3.1 Gen 1, but the new profile deliberately omits a typed USB endpoint because the text calls it only micro USB. This omission is not a claim that the device lacks USB.
  • Exact card capacity, operating-system support, physical specimen and sustained transfer still require checking.

No typed USB endpoint is supplied for this profile. Use the reader’s exact USB/cable documentation separately; no automated USB-data worksheet is populated.

Profile inspected 2026-10-08 · review due 2027-01-06 · independent review pending.

S439 · S440

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