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
Gray rectangular portable SSD with dual USB-C and USB-A connectors, compact and lightweight

MemoStone

MemoStone US4-2TB portable SSD 2TB USB 3.1 Gen 2 540MB/s Gray

SKU CH-HK4M-CVVB1

Portable 2TB SSD with USB 3.1 Gen 2 interface delivering 540MB/s read and 470MB/s write speeds in a dual Type-A and Type-C design

  • Total capacity2 TB
  • Sequential read speedUp to 540 MB/s
  • Sequential write speedUp to 470 MB/s
  • Interface typeUSB 3.1 Gen 2
  • Form factorType C & Type A
  • NAND flash type3D NAND

Capacity US4-2TB

  • 2 TB capacity stores large media libraries and backups
  • USB 3.1 Gen 2 delivers up to 540 MB/s read and 470 MB/s write speeds
  • Dual Type-C and Type-A connectors work with laptops, phones and desktops without adapters
  • Pocket-sized at 85.2 × 20.5 × 8.0 mm and 100 g for everyday carry
  • 3D NAND rated for 1 000 000 hours MTBF and 2.15 W active power

MemoStone US4 2TB portable SSD

The MemoStone US4 is a 2TB external solid-state drive with a USB 3.1 Gen 2 interface. It uses 3D NAND memory and offers sequential reads up to 540 MBps and writes up to 470 MBps. The drive weighs 100g and measures 85.2mm by 20.5mm by 8.0mm.

Dual USB-A and USB-C compatibility

This drive suits users who need a single portable SSD that plugs directly into both USB-C and USB-A ports without an adapter. It is not for buyers who want more than 2TB of capacity or who require sustained write speeds above 470 MBps for professional video work.

USB 3.1 Gen 2 540 MBps read speed

The decisive specification is the USB 3.1 Gen 2 interface delivering up to 540 MBps sequential read performance. This determines whether the drive can feed data fast enough for your workflow on the ports you have available.

How it compares

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

Price $135.99
Cheaper than about 69% 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 Up to 540 MB/s
Lower than about 86% of the 166 comparable items (median 1,050 MB/s).
Price per TB $68.00 per TB
Cheaper 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 nameMemoStone
Product lineUS4
Model nameUS4-2 TB
Part numberUS4-2 TB
Total capacity2 TB
Product colorGray
Performance
Sequential read speedUp to 540 MB/s
Sequential write speedUp to 470 MB/s
Storage
NAND flash type3D NAND
Ports & slots
Interface typeUSB 3.1 Gen 2
Power
Active power draw2.15 W
Size & build
Form factorType C & Type A
Overall width85.2 mm
Product depth20.5 mm
Overall height8.0 mm
Product weight100g
Environment & compliance
Operating temperature range-5 °C to 60 °C
Storage temperature range-20 °C to 75 °C
Operating humidity range5-95%
More details
Mean time between failures1,000,000 h

Other versions of this model

3 more in the same range

Questions about this item

What host ports are required to use the 2-in-1 dual drive?

The drive has both a USB Type-C and a USB Type-A connector, so it works with either port on the host device.

Will the drive reach its 540 MBps read speed on a USB 3.0 port?

On a USB 3.0 port the drive will operate at USB 3.0 speeds, which are lower than the 540 MBps maximum quoted for USB 3.1 Gen 2.

How can I confirm the drive is delivering its rated performance after setup?

Run a sequential read benchmark; the drive should approach 540 MBps read and 470 MBps write on a USB 3.1 Gen 2 connection.

More in Portable USB SSDs

Similar items