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Orange rectangular portable SSD with fingerprint sensor and Type-C port

UMEMORY

UMEMORY PEM100 PRO 256GB portable SSD Orange

SKU CH-QS9Y-D5AT4

A portable 256 GB SSD with fingerprint encryption, Type‑C connectivity, 458 MB/s read speed and a splash‑proof 33 × 20 × 20 mm orange case

  • Total capacity256 GB
  • Sequential read speed458
  • Sequential write speed209
  • Interface typeType-C
  • Form factorPortable
  • NAND flash typeTLC

Color Gray

  • 256 GB capacity clears storage-full alerts on phones
  • Fingerprint sensor unlocks drive with one touch
  • Type-C port works with phones, laptops and desktops
  • 33 × 20 × 20 mm body fits on a keychain
  • Splash-proof UDP build survives –25 °C to 80 °C

UMEMORY PEM100 PRO 256GB portable SSD

This compact external solid-state drive provides 256GB of TLC flash storage with a Type-C interface. It is built for smartphone, laptop and desktop users who need secure, pocket-sized expansion without a separate power supply. The integrated fingerprint sensor adds hardware encryption for sensitive files.

Capacity and real-world headroom

The drive offers 256GB of usable space for photos, videos and documents. Sequential reads reach 458MB/s and writes 209MB/s, so large media transfers finish quickly. It will saturate the Type-C link before the controller becomes the bottleneck, and the single fingerprint slot limits shared access.

Type-C interface practical limits

The USB Type-C connection works with iOS, Android, Windows and macOS hosts. Performance tops out at the stated 450MB/s read ceiling, so faster host ports yield no extra throughput. The splash-proof, UDP-packaged chassis operates from -25°C to 80°C, but the tiny 33×20×20mm form factor rules out active cooling.

How it compares

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

Price $106.99
Cheaper than about 77% of the 410 comparable items (median $202.99).
Total capacity 256 GB
Lower than about 95% of the 311 comparable items (median 1 TB).
Price per TB $417.93 per TB
Pricier than about 93% of the 310 comparable items (median $142.00 per TB).

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Specifications

Product
Brand nameUMEMORY
Total capacity256 GB
Product colorOrange
Performance
Sequential read speed458
Sequential write speed209
Storage
NAND flash typeTLC
Ports & slots
Interface typeType-C
Size & build
Form factorPortable
Overall width33 mm
Product depth20 mm
Overall height20 mm
Product weight200g
In the box
Included itemsYes

Other versions of this model

5 more in the same range

Questions about this item

Will the 33 mm wide Type-C drive work with my older USB-A laptop?

The drive uses a Type-C connector, so a USB-A to Type-C adapter or cable is required for older USB-A ports; the 450 MB/s read speed will be limited by the USB-A port's maximum throughput.

How can I verify the fingerprint sensor and 458 MB/s read speed are functioning after setup?

Register a fingerprint in the companion app, then lock and unlock the drive to test the sensor; run a benchmark tool to confirm sequential read speeds approach 458 MB/s on a USB 3.1 Gen 1 or faster port.

Does the 256 GB orange unit include a Type-C cable or must I buy one separately?

The product listing states "Package Content: Yes" but does not detail the included accessories; assume a Type-C cable is supplied, yet keep a spare cable handy in case only the drive itself is in the box.

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