SanDisk
256GB Ultra USB 3.0 Flash Drive - SDCZ48-256G-GAM46, Black
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
Step up to high-speed USB 3.0 and transfer your videos, photos and files up to ten times faster than standard USB 2.0 drives**. SanDisk Ultra USB 3.0 Flash Drive takes the wait out of moving, sharing or backing up big files—now you can transfer a full-length movie from your laptop to your flash drive in less than a minute(1). Password protection lets you keep your private files private(2) and still generously share with family and friends. And, with a sleek, sturdy SanDisk Ultra USB 3.0 Flash Drive in your pocket, you won’t need an Internet connection to access those photos and videos…
SpecPicks Verdict
SpecPicks classifies SANDISK 256GB Ultra USB 3.0 Flash Drive - SDCZ48-256G-GAM46, Black as a category leader on buyer feedback in the drives & media category, based on 52,403 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. SanDisk's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for drives & media 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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.6★ average across customer reviews
- ✓ Large, well-vetted feedback pool (52,403 reviews)
- ✓ Backward compatible with USB 2.0
- ✓ Backed by SanDisk's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key Features
- Transfer speeds up to 10x faster than standard USB 2.0 drives (4MB/s); up to 130MB/s read speed; USB 3.0 port required. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes
- Backward compatible with USB 2.0
- Secure file encryption and password protection(2)
Full Specifications
| Brand | Sandisk |
|---|---|
| Color | Black |
| Weight | 256g |
| Model Name | Ultra |
| Read Speed | 130 Megabytes Per Second |
| Unit Count | 1.0 Count |
| Write Speed | 10x |
| Connectivity | USB |
| Model Number | SDCZ48-256G-GAM46 |
| Mfr Part Number | SDCZ48-256G-GAM46 |
| Special Feature | Lightweight |
| Flash Memory Type | USB |
| Compatible Devices | Laptop |
| Hardware Interface | USB, USB 2.0, USB 3.0 |
Ready to buy?
SANDISK 256GB Ultra USB 3.0 Flash Drive - SDCZ48-256G-GAM46, Black is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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