TransMemory U203 USB Flash Drive

Sophisticated Storage

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  • Capacity

    16GB 32GB 64GB 128GB

  • Usage

    File Transfer on PC and Mac

KIOXIA TransMemory U203 USB flash drives make it simple to store media with capless, sliding retractable body. 

Easy to Use

Simply push the sliding nob to reveal the connector. When you are done, just retract the connector when it's not in use.

Small in Size, Big in Storage

Despite its small design, the TransMemory U203 USB flash drives pack in a lot of space – up to 128GB of storage for photos, music, video, documents, and more.

TransMemory U203 USB Flash Drive Product Specifications

Capacity / dimensions

  • Capacity

    16GB, 32GB, 64GB, 128GB

  • Approximate Usable Capacity*2

    14.4GB, 28.8GB, 57.6GB, 115.2GB

  • Interface

    USB 2.0 high-speed compatible*3

  • Dimension (LxWxH)

    55.0 x 21.4 x 8.5 mm (excluding slide tab)

  • Weight

    Approx. 9 g

  • Power Supply

    USB bus-power

Operating environment / protection performance

  • Operating Temperature

    0 ℃ to 50 ℃ (no condensation)

  • Storage Temperature

    -20 ℃ to 60 ℃

  • Certification

    RoHS compliant*4


  • Compatible PC & Mac

    Models equipped with the following OS, and the Type-A USB interface as a standard feature.
    Compatible with macOS Big Sur 11, macOS Monterey 12, macOS Ventura 13, macOS Sonoma 14
    Windows 10 and Windows 11
    (As of April 1, 2024)


  • Services and Support

    5-year limited warranty

Product Info

  • 16GB

    PN: LU203W016GG4

  • 32GB

    PN: LU203W032GG4

  • 64GB

    PN: LU203W064GG4

  • 128GB

    PN: LU203W128GG4

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KIOXIA USB Flash Drive Comparison

* Table can be scrolled horizontally.





Transmemory U301 USB




16, 32, 64, 128GB

32, 64, 128, 256GB

16, 32, 64, 128, 256GB

16, 32, 64, 128GB

16, 32, 64, 128GB

Max Read Speed*1

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

150 MB/s





USB 3.2 Gen 1

USB 3.2 Gen 1

USB 3.2 Gen 1

USB 2.0

USB 2.0

Warranty Period

5 year

5 year

5 year

5 year

5 year

  1. 1 MB/s is calculated as 1,000,000 bytes/s. The value is the best value obtained in specific test environment at KIOXIA Corporation and KIOXIA Corporation does not warrant read speed use in individual devices. Read speed may vary depending on user-specifications such as devices used and file size read. The write speed is lower than the read speed.
  2. Capacity is based on installed flash memory and not user available memory as part of the memory is used for management functions. Available user area are as listed above (1GB = 1,073,741,824 bytes).
  3. The terms 'USB 3.2 Gen 1 Super Speed' and 'USB 2.0 high-speed' used herein are the name of specifications upon which this product is based; they do not warrant the speed of its operation.
  4. KIOXIA Corporation defines “RoHS Compatible” products as products that either ( i ) contain no more than a maximum concentration value of 0.1% by weight in Homogeneous Materials for lead, mercury, hexavalent chromium, polybrominated biphenyls (PBBs), polybrominated diphenyl ethers (PBDEs), bis(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP) and diisobutyl phthalate (DIBP) and of 0.01% by weight in Homogeneous Materials for cadmium; or ( ii ) fall within any of the application exemptions set forth in the Annex to the RoHS Directive(*). This does not mean that Kioxia Corporation products labeled “RoHS COMPATIBLE” are entirely free of substances controlled by the RoHS Directive and does not constitute a warranty or guarantee that such products will comply with the specific laws and/or regulations adopted in any particular jurisdiction.
    *RoHS Directive: KIOXIA Corporation defines “RoHS Directive” as the DIRECTIVE 2011/65/EU OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 8 June 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.
  • To protect against accidental data loss, back up your data frequently on other storage media.

  • Product specifications and design are subject to change without prior notice.


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