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Black rectangular USB-A flash drive with sliding connector, SanDisk Ultra 256GB

SanDisk

SanDisk Ultra 256GB USB 3.0 Flash Drive SDCZ48-256G-U46

SKU CH-7RWX-DR3TP MPN SDCZ48-256G-U46

256 GB USB 3.0 flash drive with up to 130 MB/s reads and 128-bit AES encryption

  • Total capacity256 GB
  • USB standardUSB 3.0
  • Max read speedup to 130 MB/s
  • Security features128bit AES Encryption
  • Product colorBlack
  • Key featuresMove Files Quickly with Faster Transfer Speeds With transfer

Capacity 256GB

  • Read speeds up to 130MB/s move large files quickly
  • USB 3.0 interface transfers data up to ten times faster than USB 2.0
  • 256GB capacity stores high-resolution photos, videos and documents
  • 128-bit AES encryption with SanDisk SecureAccess protects private files
  • Compact black design measures 0.43" x 0.84" x 2.24" and weighs 0.03 lb

Capacity and interface

The SanDisk Ultra USB 3.0 flash drive provides 256GB of portable storage for people who move large media libraries between computers. Its USB Type-A connector works with virtually any desktop or laptop port without adapters.

Bundled software benefit

SanDisk SecureAccess adds 128bit AES encryption and password protection so private files stay locked if the drive is lost. The utility runs directly from the stick and needs no internet connection to function.

Installation experience

Plug the drive into a USB 3.0 port and it appears as a removable volume with no driver install on modern Windows, macOS and Linux systems. Write speeds drop sharply when the destination is a USB 2.0 port, so plan transfers accordingly.

How it compares

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

Price $15.99
Cheaper than about 80% of the 1,099 comparable items (median $31.99).
Total capacity 256 GB
Higher than about 80% of the 746 comparable items (median 64 GB).
Price per TB $62.46 per TB
Cheaper than about 97% of the 600 comparable items (median $226.48 per TB).

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Specifications

Product
Brand nameSanDisk
Product lineUltra
Model nameSDCZ48-256G-U46
Total capacity256 GB
Product colorBlack
Performance
Max read speedup to 130 MB/s
Ports & slots
USB standardUSB 3.0
Size & build
Product dimensions0.43 in × 0.84 in × 2.24 in
Product weight0.03 lb (0.01 kg)
Shipping weight0.02 kg
Package size152 × 102 × 13 mm
More details
Security features128bit AES Encryption

Other versions of this model

5 more in the same range

Questions about this item

Does the 256GB flash drive require any maintenance or component replacement over time?

The solid-state design has no moving parts, so no routine maintenance or replacement is needed during normal use.

What limit appears first when writing large files continuously to the USB 3.0 drive?

Sustained write speed will drop below the peak 130MB/s read rate once the controller manages flash wear and thermal load.

How much heat or noise does the SDCZ48-256G-U46 produce during all-day operation?

The drive runs silently and stays cool to the touch because it draws minimal power and has no fan or mechanical components.

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