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A small rectangular circuit board with gold edge connector and black label, M.2 2230 form factor

Western Digital

Western Digital SN740 1TB 2230 internal SSD

SKU CH-FJAW-T5AJ7 MPN SN740

A 2230 form-factor NVMe drive delivering 5150MB/s read and 4850MB/s write speeds for compact laptops and handhelds

  • Fits compact 22 by 30 mm slots
  • PCIe 4.0 x4 NVMe interface for fast data transfer
  • Sequential read speed up to 5150 MB/s
  • Sequential write speed up to 4850 MB/s
  • Compatible with Steam Deck, ROG Flow X and select laptops

Compact NVMe drive for handhelds and thin laptops

The SN740 1TB is a PCIe 4.0 x4 NVMe SSD in the 2230 form factor, measuring 22 by 30 millimetres. It delivers sequential read speeds of 5150MB/s and write speeds of 4850MB/s, making it suitable for devices such as the Steam Deck, ROG Flow X and Surface Pro 9 where space is limited.

Straightforward M.2 installation

The drive slots into any M.2 2230 key‑M socket and is recognised without extra drivers. The only frequent issue is installing it in a PCIe 3.0 x4 slot, which caps performance well below the rated 5150MB/s read speed; the drive works but cannot reach its full potential.

Verify slot length and key before ordering

Confirm your device has an M.2 2230 slot with NVMe key‑M wiring — some ultra‑thin models use shorter 2230 sockets or key‑B wiring that will not accept this drive. Also check whether the platform runs PCIe 4.0 or falls back to 3.0, as that determines the actual throughput you will see.

Points forts

  • Fits compact 22 by 30 mm slots
  • PCIe 4.0 x4 NVMe interface for fast data transfer
  • Sequential read speed up to 5150 MB/s
  • Sequential write speed up to 4850 MB/s
  • Compatible with Steam Deck, ROG Flow X and select laptops

Caractéristiques

Aucune caractéristique publiée pour cet article pour l’instant.

Questions sur cet article

How can I confirm the SN740 1TB is running at PCIe 4.0 x4 speeds after installation?

Check the drive in a tool such as CrystalDiskMark; sequential reads should approach 5150 MB/s and writes 4850 MB/s when the slot is PCIe 4.0 x4.

What does the package contain and what extra parts are required for a Steam Deck or ROG Flow X install?

The box includes one 1 TB SN740 2230 drive; no heatsink, screw or cloning cable is supplied, so source those separately if your device needs them.

Which capacity of the SN740 2230 should I pick for a Surface Pro 9 or Dell 5520 upgrade?

This listing is the 1 TB version; choose it if you want 5150 MB/s reads and 4850 MB/s writes in the 2230 form factor.

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