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Rectangular silver aluminium portable SSD with rounded edges

SanDisk

SanDisk SDPS31H-004T-GBCND 4TB portable SSD

SKU CH-BSYC-XAWDH MPN SDPS31H-004T-GBCND

A rugged 4TB portable SSD with Thunderbolt 3 speeds up to 3000MB/s read and 2500MB/s write, plus IP68 protection and 4000lb crush resistance

  • Transfer 50 GB in under a minute with 3000 MB/s read speed
  • Write data at 2500 MB/s for faster creative workflows
  • Connect via Thunderbolt 3 at 40 Gbps or USB-C at 10 Gbps
  • Survive dust, water, 3 m drops and 4000 lb crush with IP68 rating
  • Aluminium core draws heat away to sustain peak transfer rates

4TB Thunderbolt 3 portable SSD

The SanDisk Professional PRO-G40 delivers up to 3000MB/s read and 2500MB/s write speeds over Thunderbolt 3. It offers 4TB of capacity for creative professionals who need fast external storage. Dual-mode operation also supports USB-C at 10Gbps for broader device compatibility. The rugged aluminium core helps sustain performance during heavy workloads.

Suits high-volume media workflows

Photographers and videographers moving large RAW libraries or 4K footage will benefit from the sustained throughput. The IP68 rating, 3m drop protection and 4000lb crush resistance protect data in harsh field conditions. Users whose devices lack Thunderbolt 3 or USB-C 10Gbps ports will not reach the advertised speeds. Buyers needing more than 4TB should consider higher-capacity alternatives.

Rugged build enables mobile use

The sealed enclosure and aluminium heat sink let the drive operate reliably on location without extra protective cases. No bundled software or accessories are mentioned in the supplied data. The dual-mode cable compatibility simplifies connections across Thunderbolt 3 and USB-C hosts. The durable design reduces the need for third-party ruggedising accessories.

Highlights

  • Transfer 50 GB in under a minute with 3000 MB/s read speed
  • Write data at 2500 MB/s for faster creative workflows
  • Connect via Thunderbolt 3 at 40 Gbps or USB-C at 10 Gbps
  • Survive dust, water, 3 m drops and 4000 lb crush with IP68 rating
  • Aluminium core draws heat away to sustain peak transfer rates

Specifications

No published specifications for this item yet.

Questions about this item

What Thunderbolt 3 port must my computer have to reach the 3000MB/s read speed?

Your computer needs a Thunderbolt 3 port that supports 40Gbps bandwidth to achieve the quoted 3000MB/s read and 2500MB/s write performance.

Will the drive still work if I connect it to an older USB-C port that only runs at 10Gbps?

Yes, the drive is dual-mode and will operate over USB-C at 10Gbps, though speeds will be lower than the 3000MB/s read and 2500MB/s write ceiling.

How can I verify the drive is sustaining its peak performance after I set it up?

Run a large sequential transfer — moving a 50GB file should complete in roughly one minute when the Thunderbolt 3 link is running at full 40Gbps speed.

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