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SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive — main product image
SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive
SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive
SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive
SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive
SanDisk

SanDisk SDCZ48-032G-A46 32GB Ultra USB 3.0 Flash Drive

★★★★★4.6 (473 reviews)
USB 3.0USB 2.0

Compact 32GB USB 3.0 flash drive with read speeds up to 100MB/s and built-in encryption software.

$7.74*
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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

The SanDisk Ultra USB 3.0 Flash Drive (SDCZ48-032G-A46) offers 32GB of portable storage in a sleek, compact design. Built around the USB 3.0 interface, it delivers read speeds up to 100MB/s — fast enough to transfer a full-length movie in under 40 seconds. The drive remains fully compatible with USB 2.0 ports, so it works seamlessly with older machines, albeit at reduced speeds. Its slim black casing and retractable USB connector make it easy to slip into a pocket or attach to a keyring without adding bulk.

A standout feature is the bundled SanDisk SecureAccess software, which creates a password-protected vault on the drive using 128-bit AES encryption. This is particularly useful for professionals who carry sensitive documents between workstations. The software supports Windows XP through Windows 8 and Mac OS X v10.5 and above. For users who simply need a reliable, fast way to move files between computers, the SanDisk Ultra 32GB strikes a practical balance between speed, security, and affordability.

Key Features

Transfer files up to 10x faster than standard USB 2.0

Transfer a full-length movie in less than 40 seconds

Fast performance speeds (up to 100MB/s read)

USB 3.0-enabled (USB 2.0 compatible)

SanDisk SecureAccess software protects private files with a personal password and automatic 128-bit AES encryption

Protects Private Files With Sandisk Secureaccess(tm) Software

Password Protection Uses 128-bit Aes Encryption & Is Supported By Windows(r) Xp, Vista(r), 7, 8 & Mac(r) Os X V10.5+

Usb 3.0-enabled & Usb 2.0-compatible Read Speeds Up To 80mbs

32gb

Specifications

Brand
SanDisk
Model
SDCZ48-032G-A46
Capacity
32GB
Interface
USB 3.0 (USB 2.0 Compatible)
Read Speed
Up to 100MB/s
Encryption
128-bit AES (via SanDisk SecureAccess)
Color
Black
OS Compatibility
Windows XP / Vista / 7 / 8, Mac OS X v10.5+

Pros & Cons

👍 Pros

  • Read speeds up to 100MB/s make file transfers significantly faster than USB 2.0 drives
  • Included SecureAccess software provides password-protected 128-bit AES encryption at no extra cost
  • Compact, slim form factor is easy to carry on a keychain or in a pocket
  • Backward compatible with USB 2.0 ports for use with older computers

👎 Cons

  • 32GB capacity may be limiting for users who need to transport large video files or backups
  • Write speeds are considerably slower than the advertised read speeds
  • The retractable connector lacks a cap, leaving the USB plug exposed when extended
  • SecureAccess encryption software does not support Linux

Frequently Asked Questions

The drive delivers read speeds up to 100MB/s when connected to a USB 3.0 port, which is up to 10x faster than standard USB 2.0 drives.
Yes, the SDCZ48-032G-A46 is fully backward compatible with USB 2.0 ports, though transfer speeds will be limited to USB 2.0 rates.
SecureAccess is included software that lets you password-protect private files on the drive using 128-bit AES encryption. It is supported on Windows XP through Windows 8 and Mac OS X v10.5 and later.
As with all flash storage, formatted capacity is less than advertised. You can expect roughly 28–29GB of usable space after formatting.

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