US
Sandisk

SanDisk Ultra Fit USB 3.1 Flash Drive 32GB

  • 32 GB capacity, actual user storage less
  • Up to 130MB/s read on a USB 3.1 Gen 1 or USB 3.0 port
  • Up to 15x faster writes than standard USB 2.0 drives (4MB/s)
  • USB Type A plug, backward compatible with USB 3.0 and USB 2.0
  • 128-bit AES password protection, Mac needs a software download
  • 1.41 g compact body made to plug in and leave in
  • 5 year limited manufacturer warranty

Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A tiny drive that can stay in a computer port as permanent extra storage, with quick reads on newer USB ports. Writes are far slower than reads, so filling it with big files takes patience.

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ASIN: B077VXV323Model: SDCZ430-032G-G46Category: USB Flash Drives

Sizes Available

32GB32gb (3-pack)64GB64GB (5-Pack)

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Overview

SanDisk built the Ultra Fit as a low-profile USB flash drive with a compact, streamlined body, so it can stay plugged in as permanent extra storage. Full speed needs a newer USB port, and older ports still work at reduced speed.

Leave-in convenience is what this drive offers: the body is small enough to stay in a port full time. Writes run much slower than reads, so copying large folders onto it is the slow direction. Password protection exists, but it relies on SanDisk software that Mac users must download separately.

Who it's for

Laptops and desktops with a spare USB port gain storage without a long stick poking out. People moving big video projects onto the drive daily will find the write speed limiting.

Pros and cons

Pros
  • Small enough to leave plugged in
  • Fast reads on newer USB ports
  • Works in older USB ports
  • Password protection with AES encryption
Cons
  • Writes much slower than reads
  • Mac password tool needs a separate download
  • Full speed needs a newer USB port
  • Usable space below the labeled capacity

Performance notes

Read speed depends on the host port: a newer USB port lets it reach its rated read figure, while an older port holds it to the slower standard. Writes run well below reads, so the time to fill the drive is set by write speed. SanDisk notes results also vary with the host device and file attributes.

Specifications

BrandSandisk
ModelSDCZ430-032G-G46
Dimensions & fit
Item weight0 ounces
Capacity & performance
Memory Storage Capacity32 GB
Compatibility & installation
Hardware InterfaceUSB 3.1 Gen 1
Hardware Connectivity TechnologyUSB Type A
Warranty & support
Warranty Description5 years
Other details
Additional FeaturesCompact, Plug In And Leave In
Password protection128-bit AES encryption

Frequently asked questions

Can the SanDisk Ultra Fit stay plugged in all the time?

Yes. SanDisk designed its compact, streamlined body so you can plug it in and leave it in as extra storage.

Will the SanDisk Ultra Fit work in a USB 2.0 port?

Yes, it is backward compatible with USB 3.0 and USB 2.0. The up to 130MB/s read speed needs a USB 3.1 Gen 1 or USB 3.0 port, so a USB 2.0 port is slower.

How do I password protect the SanDisk Ultra Fit?

Password protection uses 128-bit AES encryption and is supported on Windows 7, Windows 8, Windows 10 and macOS v10.9+. Mac users must download the SecureAccess software from SanDisk.

Why is the Ultra Fit write speed lower than its read speed?

SanDisk rates reads at up to 130MB/s, while writes are rated only as up to 15x faster than standard USB 2.0 drives at 4MB/s. Performance may be lower depending on the host device.

Is the full 32 GB usable on the SanDisk Ultra Fit?

No. SanDisk counts 1GB as 1,000,000,000 bytes and states actual user storage is less.