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Black rectangular portable SSD with rounded edges and USB-C port

SanDisk Professional

SanDisk Professional PRO-G40 2TB portable SSD SDPS31H-002T-GBCND

SKU CH-WYW7-3R31E MPN SDPS31H-002T-GBCND

A 2TB portable SSD delivering 2700MB/s read and 1900MB/s write via Thunderbolt 3 with IP68 protection and 4000lb crush resistance

  • Total capacity2 TB
  • Sequential read speed2,700 MB/s
  • Sequential write speed1900
  • Interface typeUsb 3.0
  • Form factorPortable
  • Cache memory2 unknown modifier

Capacity 2TB

  • 2700 MB/s read and 1900 MB/s write via Thunderbolt
  • IP68 dust and water resistance protects the drive
  • 4000 lb crush resistance withstands heavy pressure
  • Up to 3 m drop resistance for accidental falls
  • Aluminium core dissipates heat to sustain performance

Portable 2TB SSD for professionals

The SanDisk Professional PRO-G40 2TB portable SSD delivers up to 2700MB/s read and 1900MB/s write speeds over Thunderbolt 3. Its IP68 rating, 4000lb crush resistance and 3m drop protection suit field workflows. An aluminum core manages heat during sustained transfers. The drive targets creators who need rugged, high-speed external storage.

Dual-mode interface and rugged build

Thunderbolt 3 (40Gbps) and USB-C (10Gbps) compatibility lets the drive work with current and older ports without extra adapters. The sealed enclosure achieves IP68 dust and water resistance while surviving 4000lb crush force and 3m drops. These physical protections replace the need for separate rugged cases. The aluminum core acts as a heatsink to maintain throughput under load.

Thunderbolt 3 bandwidth and USB fallback

Peak speeds of 2700MB/s read and 1900MB/s write require a Thunderbolt 3 host; USB-C 10Gbps ports will run slower. The drive uses a USB 3.0 interface specification, so it cannot reach Thunderbolt rates on USB-only connections. Buyers without Thunderbolt 3 ports will not see the advertised maximums. No internal drive details or encryption features are specified.

How it compares

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

Price $472.99
Pricier than about 81% of the 410 comparable items (median $202.99).
Total capacity 2 TB
Higher than about 60% of the 311 comparable items (median 1 TB).
Sequential read speed 2,700 MB/s
Higher than about 91% of the 166 comparable items (median 1,050 MB/s).
Price per TB $236.50 per TB
Pricier than about 82% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameSanDisk Professional
Product lineSanDisk Professional PRO-G40 SSD
Model nameSanDisk Professional PRO-G40 SSD
Part numberSDPS31H-002T-GBCND
Total capacity2 TB
Product colorBlack
Performance
Sequential read speed2,700 MB/s
Sequential write speed1900
Storage
Cache memory2 unknown modifier
Ports & slots
Interface typeUsb 3.0
Size & build
Form factorPortable
Overall width8.3 in x 6.2 in x 4.7 in
Product depth8.3 in x 6.2 in x 4.7 in
Overall height8.3 in x 6.2 in x 4.7 in
Product weight0.27 lb (0.12 kg)
Shipping weight0.14 kg
Package size127 × 111 × 58 mm

Other versions of this model

1 more in the same range

Questions about this item

Does the aluminum core require any maintenance to keep the drive cool?

The aluminum core is a passive heat spreader with no moving parts, so it needs no maintenance.

At 2700 MB/s read and 1900 MB/s write, what limits sustained throughput first?

The Thunderbolt 3 40 Gbps link caps sustained throughput before the internal NAND reaches its limit.

How loud and hot does the PRO-G40 get when running all day?

It has no fan, so it runs silently; the aluminum core keeps surface temperatures low during continuous transfers.

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