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Tiny black USB-A flash drive with lanyard hole

SanDisk

SanDisk Ultra Fit 128GB USB 3.2 Gen 1 flash drive with lanyard

SKU CH-QFKM-W399G

Compact USB 3.2 Gen 1 flash drive adds 128GB of plug-and-stay storage with read speeds up to 130MB/s and includes a lanyard

  • Total capacity128 GB
  • USB standardUSB 3.2 Gen 1
  • USB port typesType A
  • Max read speedup to 130 MB/s
  • Security features128bit AES Encryption
  • Product colorBlack
  • Compact plug-and-stay design adds storage without protruding
  • Up to 130MB/s read speed transfers files quickly
  • 128GB capacity holds large media libraries
  • 128-bit AES encryption protects sensitive data
  • Includes lanyard for convenient portability

Ultra Fit 128GB USB 3.2 Gen 1 Drive

This SanDisk Ultra Fit flash drive provides 128GB of compact storage with a USB Type A connector. It is designed for users who want a low-profile, plug-and-stay solution for laptops, tablets, TVs, gaming consoles or car audio systems. The tiny form factor lets it remain inserted without blocking adjacent ports. Hardware AES encryption helps protect stored files.

Upgrade from USB 2.0 Flash Drives

The drive delivers read speeds up to 130MB/s and writes up to 15 times faster than standard USB 2.0 drives. That jump is worth it when you regularly move large files such as full-length movies, which can transfer in less than 30 seconds. It adds up to 256GB of extra space to devices that only have a single USB-A port available.

Sustained Transfer Behaviour

The compact metal housing has minimal surface area for heat dissipation, so write speeds can throttle during long, continuous transfers of multi-gigabyte folders. Short bursts such as moving a single movie stay near the peak rate, but extended workloads will run slower as the controller manages thermal limits. The drive is built for convenience rather than sustained high-throughput sessions.

How it compares

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

Price $21.99
Cheaper than about 68% of the 1,099 comparable items (median $31.99).
Total capacity 128 GB
Higher than about 60% of the 746 comparable items (median 64 GB).
Price per TB $171.80 per TB
Cheaper than about 69% of the 600 comparable items (median $226.48 per TB).

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Specifications

Product
Brand nameSanDisk
Product lineUltra Fit
Model nameSDCZ430-032G-G46
Total capacity128 GB
Product colorBlack
Performance
Max read speedup to 130 MB/s
Ports & slots
USB standardUSB 3.2 Gen 1
USB port typesType A
Size & build
Product dimensions0.2 in × 0.56 in × 1.17 in
Product weight0.05 oz
More details
Security features128bit AES Encryption

Questions about this item

Will the 1.17-inch length stick out of a laptop USB-A port?

The drive measures 1.17 inches long by .56 inches wide by .20 inches thick, so it sits almost flush in a standard USB-A socket.

Do I need to install drivers or run setup software before the 128GB capacity appears?

No driver installation is required; the drive uses native USB 3.2 Gen 1 mass-storage support and is recognised automatically by Windows, macOS, Linux, game consoles and car audio systems.

How long does the 128-bit AES encryption stay effective, and can the drive itself wear out?

The hardware encryption is always active and does not expire; the NAND flash is rated for typical consumer workloads, and there are no moving parts or batteries to replace.

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