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Small black rectangular USB 3.0 flash drive with sliding connector, 128GB capacity

SanDisk

SanDisk Ultra CZ48 128GB USB 3.0 Flash Drive

SKU CH-M353-J0QTJ

A 128GB USB 3.0 flash drive with read speeds up to 100MB/s and 128-bit AES encryption for secure file storage

  • Total capacity128 GB
  • USB standardUSB 3.0
  • Max read speedup to 100 MB/s
  • Security features128bit AES Encryption
  • Key featuresMove Files Quickly with Faster Transfer Speeds With transfer
  • Product dimensions0.43 in × 0.84 in × 2.24 in
  • Read speeds up to 100MB/s move large files quickly
  • USB 3.0 interface transfers data up to 10 times faster than USB 2.0
  • 128GB capacity stores extensive media libraries and documents
  • 128-bit AES encryption with SecureAccess software protects private files
  • Compact design at 0.43" x 0.84" x 2.24" fits easily in any pocket

Capacity & Interface

The SanDisk Ultra CZ48 is a 128GB USB 3.0 flash drive built for fast file transfers. It suits anyone who needs portable storage for large media libraries, documents or backups. Read speeds reach up to 100MB/s, cutting wait times when moving data between devices. The drive is backward compatible with USB 2.0 ports for broad usability.

Host Port Check

Before ordering, confirm your computer has a USB 3.0 Type-A port to achieve the advertised 100MB/s read performance. USB 2.0 ports will work but limit transfer rates to the older standard. No drivers are required on modern operating systems. Ensure the physical slot can accommodate the drive's 2.24-inch length without blocking adjacent ports.

Build & Connector

The compact metal-and-plastic body measures 0.43 by 0.84 by 2.24 inches and weighs 0.48 oz, making it easy to carry on a key ring or in a pocket. A sliding USB connector retracts for protection without a separate cap to lose. Included SanDisk SecureAccess software provides 128-bit AES encryption and password protection for sensitive files.

How it compares

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

Price $29.99
Typical for this category: the median of 1,099 items is $31.99.
Total capacity 128 GB
Higher than about 60% of the 746 comparable items (median 64 GB).
Price per TB $234.30 per TB
Typical for this category: the median of 600 items is $226.48 per TB.

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Specifications

Product
Brand nameSanDisk
Product lineUltra
Model nameSDCZ48-128G-U46
Total capacity128 GB
Performance
Max read speedup to 100 MB/s
Ports & slots
USB standardUSB 3.0
Size & build
Product dimensions0.43 in × 0.84 in × 2.24 in
Product weight0.48 oz
More details
Security features128bit AES Encryption

Questions about this item

Does the 128GB SanDisk Ultra CZ48 include any software or need a separate download for encryption?

The drive includes SanDisk SecureAccess software for 128-bit AES password protection and file encryption.

How do I decide between the 16GB, 32GB, 64GB and 128GB capacities of the Ultra CZ48?

All listed capacities share the same USB 3.0 interface and up to 100MB/s read speed; choose the size that fits your typical file volume.

What does the 100MB/s read speed mean when I copy a large video file to my laptop?

A full-length movie can be transferred from the drive to the computer in well under a minute at that rate.

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