We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular portable SSD with rounded edges and matte finish

SanDisk Professional

SanDisk Professional PRO-G40 1TB portable SSD SDPS31H-001T-GBCND

SKU CH-2YQP-HC5E6 MPN SDPS31H-001T-GBCND

Ultra-rugged portable SSD with 1TB capacity, dual Thunderbolt and USB-C modes, IP68 protection, 3m drop and 4000lb crush resistance, and speeds up to 2700MB/s read and 1900MB/s write

  • Total capacity1 TB
  • Product colorBlack

Capacity 1TB

  • Super-fast 2700MB/s read speeds via Thunderbolt 3
  • 1900MB/s write speeds move 50GB in 30 seconds
  • Ultra-rugged IP68 dust and water resistance protects data
  • 3m drop and 4000lb crush resistance withstands harsh environments
  • Aluminium core cooling sustains high transfer performance

What the PRO-G40 1TB is

The SanDisk Professional PRO-G40 is a 1TB portable solid-state drive built for creative professionals who move large media files between workstations. Its rugged enclosure meets IP68 dust and water resistance, survives a 3m drop and withstands 4000lb of crush force. An internal aluminium core draws heat away from the controller to help sustain high transfer rates during long sessions.

Interface limits you will hit

Thunderbolt 3 delivers up to 2700MB/s read and 1900MB/s write, letting a 50GB project move in 30 seconds or less. Over USB 3.2 Gen 2 the ceiling drops to 1050MB/s read and 1000MB/s write, so the same transfer takes noticeably longer. The drive negotiates the faster protocol automatically when a Thunderbolt 3 host is detected, otherwise it falls back to the USB path without user intervention.

The spec that decides fit

Capacity is fixed at 1TB; there is no larger or smaller option in this specific model. Buyers who need more storage for raw 8K footage or extensive game libraries must look at a different SKU. Conversely, users with modest document or photo archives may find the terabyte excessive for their daily carry.

How it compares

Measured against everything we stock in Portable USB SSDs, at today’s prices. Recalculated every night.

Price $321.99
Pricier than about 72% of the 410 comparable items (median $202.99).
Total capacity 1 TB
Typical for this category: the median of 311 items is 1 TB.
Price per TB $321.99 per TB
Pricier than about 90% of the 310 comparable items (median $142.00 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSanDisk Professional
Part numberSDPS31H-001T-GBCND
Total capacity1 TB
Product colorBlack
Size & build
Shipping weight0.14 kg
Package size127 × 111 × 58 mm

Other versions of this model

1 more in the same range

Questions about this item

Should I pick the 1TB model or look for a larger capacity?

The listed model is the 1TB capacity; no other capacities appear in the product data.

What do the 2700MB/s read and 1900MB/s write figures mean when the drive is inside my computer?

Those are the peak sequential speeds over Thunderbolt; real-world throughput will be lower and depends on file sizes, workload and host controller.

Does the USB-C port run at Thunderbolt 3 40Gbps or USB 3.2 Gen 2 10Gbps, and what does that cap?

The drive supports both; Thunderbolt 3 reaches 2700MB/s read and 1900MB/s write, while USB 3.2 Gen 2 tops out at 1050MB/s read and 1000MB/s write.

More in Portable USB SSDs

Similar items