FIELD GUIDESource-led reference
Port & Cable

setup

α7 IV normal XAVC S-I 4K with V90 SD

Sony lists SDXC V90 or higher for normal XAVC S-I 4K recording at the 600Mbps table entry. SF-G128T is an exact UHS-II/V90 card example; offload through the MRW-G2’s documented SD interface.

Applies to: ILCE-7M4 normal movie mode, SF-G128T, MRW-G2 supplied C-to-C cable and Mac mini M4 front USB10Gbps; not the S&Q footnote exception.

data
ILCE-7M4 SD slot → SF-G128T removed safely → MRW-G2 SD reader → USB data cable → Mac mini → verified backup
power
Camera battery; reader USB bus power.
video
Camera-local recorded files, not live capture.
Functional path diagram. Arrows show the stated role and direction; they do not report an observed connection.

What the path requires

  • Select exact normal recording mode; check proxy and simultaneous-recording constraints.
  • Confirm camera firmware and card support/recall/condition guidance before recording.
  • Do not assume both camera slots or both reader media types can operate simultaneously from the number of slots.

Worked documentary examples

Same card used in the Type-A-only S&Q exception

Documented outcome: Documented mode conflict

  • Sony footnote2 S&Q case.
  1. Use the specified Type A media.
  2. Do not reuse the normal-movie table row for the changed mode.
ILCE-7M4 — Memory cards that can be used

Your next useful observation

Record the actual movie/S&Q mode and whether proxy or two-slot recording is enabled.

Keep these limits

  • Documentary class/part matching; no recorded workload or complete card qualification.
Source documents, revisions and inspection methods

Mac mini (2024) — Technical Specifications

Apple · 2024 model; live revision unavailable

Charging and Expansion → front USB-C and rear Thunderbolt groups

Inspected 2026-10-23 by public_page. Primary HTML body/relevant tables inspected; AI-assisted source reading, no independent human review or hardware validation.

Exact M4 front USB10Gbps host path; no USB-A port.

Read the original source

ILCE-7M4 — Memory cards that can be used

Sony · Help Guide 2110/v1; revision unavailable

Movie and S&Q recording tables; CFexpress Type B exclusion; file-system note

Inspected 2026-10-23 by public_page. Primary HTML body/relevant tables inspected; AI-assisted source reading, no independent human review or hardware validation.

Exact camera mode/media requirements.

Read the original source

MRW-G2 CFexpress Type A / SD Card Reader

Sony · Live revision unavailable

Features: supported card types, USB3.2Gen2 and supplied C/A cables

Inspected 2026-10-23 by public_page. Primary HTML body/relevant tables inspected; AI-assisted source reading, no independent human review or hardware validation.

Exact reader upstream and media classes; simultaneous use not established.

Read the original source

SF-G128T Specifications

Sony · Live revision unavailable

General Features: UHS-II, V90/U3, capacity

Inspected 2026-10-23 by public_page. Primary HTML body/relevant tables inspected; AI-assisted source reading, no independent human review or hardware validation.

Exact SD card media/speed-class evidence; not a camera qualification test.

Read the original source

Source-documented education. Hardware behavior and independent human review have not been performed for these examples.

Draft a correction · More connection lessons