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Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive for Storage Expansion and Backup, Up To 150MB/s Read, Black (LJDM400256G-BNBNU)
Lexar

Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive for Storage Expansion and Backup

Bottom line: The Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive: USB 3.2 Gen 1 speeds rated up to 150MB/s read; main trade-off: lexar does not publish a write speed for this drive.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ USB 3.2 Gen 1 speeds rated up to 150MB/s read
  • ✓ 256GB capacity handles large backup and media libraries
  • ✓ Lexar DataShield password protection built in
  • ✓ Metal housing with key ring loop for pocket carry
  • ✓ Backwards compatible with USB 3.1, 3.0, and 2.0 ports

Cons

  • ✗ Lexar does not publish a write speed for this drive
  • ✗ DataShield software support varies between PC and Mac
  • ✗ No stated water, shock, or drop rating despite metal shell

Manufacturer description

The Lexar JumpDrive M400 USB 3.2 Gen 1 Flash Drive moves your files faster and with style. Experience high-speed USB 3.2 performance of up to 150MB/s read so you spend less time transferring files. The stylish metal and key ring design allows you to easily transfer files anywhere, anytime. And, with the Lexar DataShield password protection, you can be certain your files will be protected.

SpecPicks Verdict

SpecPicks scored Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Lexar's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • Transfer files with style and USB 3.2 Gen 1 performance
  • As stylish as it is durable
  • Protect your files with Lexar DataShield
  • USB 3.2 Gen 1 enabled; backwards compatible with USB 3.1 / USB 3.0 and 2.0 devices
  • Compatible with PC and Mac systems

Full Specifications

BrandLexar
ColorBlack
Weight400256g
Model NameM400
Read Speed150 Megabytes Per Second
ConnectivityUSB
Model NumberLJDM400256G-BNBNU
CompatibilityPC, Mac
Mfr Part NumberLJDM400256G-BNBNU
Special FeatureUSB 3.2
Flash Memory TypeUSB
Compatible DevicesPC, Mac
Hardware InterfaceUSB 3.2 Gen 1
Additional FeaturesUSB 3.2
Warranty DescriptionFive-year limited warranty
Connectivity TechnologyUSB
Memory Storage Capacity256 GB
Hardware Connectivity TechnologyUSB Type A
Full listing titleLexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive for Storage Expansion and Backup, Up To 150MB/s Read, Black (LJDM400256G-BNBNU)

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Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive for Storage Expansion and Backup, Up To 150MB/s Read, Black (LJDM400256G-BNBNU) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Lexar 256GB JumpDrive M400 USB 3.2 Gen 1 Flash Drive for Storage Expansion and Backup, Up To 150MB/s Read, Black (LJDM400256G-BNBNU)
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