USB Kioxia TransMemory 64GB/128GB U366 USB 3.2 Gen 1

Stylish, Compact Design

TransMemory U366 USB flash drive’s stylish, metal housing compliments design-conscious notebook PCs and goes wherever you go, in style.

Small in Size, Big in Storage

At 39mm long, 12.2mm wide and 4.5mm thick and up to 128GB, the U366 easily goes where you go.

Easy-to-Carry Key Ring

Worry less about leaving it behind! The U366’s key ring will let you easily pair it up with your house/car keys.

Fast File Transfer

Utilizing USB 3.2 Gen 1 technology (backwards compatible with USB 2.0) 128GB delivers a read transfer speed up to 200 MB/s*¹, you’ll get work done quick.
(16GB, 32GB, 64GB deliver up to 100 MB/s*¹)

TransMemory U366 USB Flash Drive Product Specifications

Capacity / dimensions

• Capacity

   64GB, 128GB

• Approximate Usable Capacity^*2

  57.6GB, 115.2GB

• Interface

  USB 3.2 Gen 1 SuperSpeed compatible / USB 2.0 high-speed compatible^*3

• Dimension (LxWxH)

  39.0 x 12.2 x 4.5 mm

• Weight

  Approx. 6 g

• Power Supply

  USB bus-power

Performance

• Max Read Speed^*1

  200 MB/s (128GB)
  100 MB/s (16GB, 32GB, 64GB)

Operating environment / protection performance

• Operating Temperature

  0 ℃ to 50 ℃ (no condensation)

• Storage Temperature

  -20 ℃ to 60 ℃

• Certification

  RoHS compliant^*4

Compatibility

• Compatible PC & Mac

  Models equipped with the following OS, and the Type-A USB interface as a standard feature.
  Compatible with macOS Monterey 12, macOS Ventura 13, macOS Sonoma 14, macOS Sequoia 15
  Windows 10 and Windows 11
  (As of May 28, 2025)

Others

• Services and Support

  5-year limited warranty

Product Info

• 64GB

  PN: LU366S064GG4
  EAN: 4582563853867

• 128GB

  PN: LU366S128GG4
  EAN: 4582563853881