FIELD GUIDESource-led reference
Port & Cable

E122 · No electrical assignment published

CFexpress Type B card interface engineering reference

Type B uses two PCIe lanes in the CFA explanation. Shared XQD geometry is not firmware support; the D850 change is exact-model evidence.

Open field noteSource trail

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

CFexpress Type B: original nominal width by height envelope study, 29.6 by 38.5 mm, 3.8 mm nominal depth. Not a contact or key drawing; no host compatibility approval.
View nominal front-face envelope, no connector edgeW × H 29.6 × 38.5 mmThickness 3.8 mm, reported separatelyOriginal proportional study · not a fitting template · independent review pending
Identification schematic only · not to scale · drawing review pending. No engineering drawing is published for this profile.

Orientation

How to read this profile

Existing identification-only schematic. No mating-face numbering, pin-side transformation or mechanical template is supplied.

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
Dimensions / axis29.6 mm approximate overall width (CEB-G128); 38.5 mm approximate overall length (CEB-G128); 3.8 mm approximate overall thickness (CEB-G128)S098Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. CEB-G128. Documented role: card. Approximate dimensions of named CEB-G models. No XQD electrical compatibility inferred merely from shared physical form.
Connector rolecard (CEB-G128)S098Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. CEB-G128. Documented role: card. Approximate dimensions of named CEB-G models. No XQD electrical compatibility inferred merely from shared physical form.
ManufacturerSony (CEB-G128)S098Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. CEB-G128. Documented role: card. Approximate dimensions of named CEB-G models. No XQD electrical compatibility inferred merely from shared physical form.
SeriesCEB-G (CEB-G128)S098Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. CEB-G128. Documented role: card. Approximate dimensions of named CEB-G models. No XQD electrical compatibility inferred merely from shared physical form.
Exact part / implementationCEB-G128 (CEB-G128)S098Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. CEB-G128. Documented role: card. Approximate dimensions of named CEB-G models. No XQD electrical compatibility inferred merely from shared physical form.

Not recorded: Nominal contacts, Positions / cavity span, Populated contacts, Contact rows, Contact pitch, 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
  • A camera update does not update a card reader. Check exact card, reader, capacity and recording-mode documentation separately.
  • 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 →

Unknowns stay unknown.

  • A camera update does not update a card reader. Check exact card, reader, capacity and recording-mode documentation separately.
  • 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.

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

C122Asource checked

The CompactFlash Association states that Type B and XQD share a form factor and connector, with camera support conditional on implementation.

CompactFlash Association · Card types and form-factor distinctions ↗
CFexpress Form Factors; Type A versus Type B; Legacy Standards · No copied tables, logos, numeric throughput promises, exhaustive market status or licensed normative specification. Text-only scope.

C122Csource checked

CFA describes CFexpress Type B as using two PCIe lanes and retaining the same dimensions and connector as XQD. It separately makes camera support conditional on implementation or a manufacturer update.

CompactFlash Association · Card types and form-factor distinctions ↗
CFexpress Form Factors; Type A versus Type B; Legacy Standards · No copied tables, logos, numeric throughput promises, exhaustive market status or licensed normative specification. Text-only scope.

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

Evidence behind this page

Scope first. Source second. Approval separate.

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

Page scope: No V81 engineering drawing added. The inherited recognition illustration is unnumbered and not to scale.

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 2 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

S098 · CFexpress Type B CEB-G support — interface identity

Sony · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: Sony CEB-G examples explicitly identify CFexpress Type B and PCI Express.

Not established / limitations: Japanese primary text inspected. Model-specific performance and dimensions are not transferred to every card.

Locator: CEB-G product information; interface row

Trace 3 claims to their source records

C122A · P122

The CompactFlash Association states that Type B and XQD share a form factor and connector, with camera support conditional on implementation.

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

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

C122B · P122

Sony labels its CEB-G card examples CFexpress Type B with a PCI Express interface.

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

Source links: S098 · Evidence trail → (private workspace)

C122C · P122

CFA describes CFexpress Type B as using two PCIe lanes and retaining the same dimensions and connector as XQD. It separately makes camera support conditional on implementation or a manufacturer update.

Claim scope: Card Types public text: form-factor footnote and A/B FAQ; no dimensions or speed table transcribed.

Source links: S096 · 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.