512GB Ultra Fit USB 3.2 Gen 1 Flash Drive - Up to 400MB/s, Plug-and-Stay Design - SDCZ430-512G-GAM46, Black

I have had this for several years now, it is still functioning flawlessly, very durable! It does everything I need, and so far, I have not come close to filling it upI use this everyday! This was worth every penny. It is small, so does not get bumped while in the computer, is easy to install and remove, and gives me the security I need and all my important files at my fingertips no matter what computer I am using at the time. Would buy again and again.

The SanDisk 1TB Ultra Fit USB 3.2 Gen 1 is one of those rare storage devices that feels almost unreal in the hand—because it practically isn’t there. The plug‑and‑stay design is barely larger than a fingernail, yet it delivers a full terabyte of storage in a form factor that disappears into a laptop, car stereo, or console without protruding or snagging. Out of the box, the usable capacity lands around 931GB, which is normal for flash storage; manufacturers calculate 1TB as one trillion bytes, while operating systems use binary measurement (1TB = 1,099,511,627,776 bytes), so the “missing” space is simply math, not a defect. Despite its tiny footprint, performance is surprisingly strong. Real‑world read speeds hover near the advertised 400MB/s, especially when transferring large, contiguous files. Write speeds are naturally lower—as expected for compact USB 3.2 Gen 1 drives—but still fast enough for media libraries, game installs, and bulk document transfers without feeling sluggish. Heat stays controlled during sustained writes, and the drive maintains stable throughput without the dramatic throttling common in ultra‑compact USB sticks. If you need massive storage in a device small enough to forget about, this is one of the most efficient, unobtrusive solutions available. It’s a deceptively powerful little workhorse that earns its place in any everyday‑carry tech kit.

I needed a high-capacity flash drive that I could leave plugged into my laptop without it sticking out and risking being snapped off. The SanDisk Ultra Fit is famous for its tiny, low-profile design, and this 512GB model was the perfect "plug-and-forget" solution I was looking for. Real-World Speed & Performance For a drive this small, the performance is impressive. While it's not going to match an external SSD, it's incredibly fast for a flash drive. I regularly use it to move large game installation folders and video files between my desktop PC and my laptop. I was able to transfer a 20GB folder in just a couple of minutes, which is fantastic. For smaller files, it's nearly instant. My Primary Uses & Usability This drive's versatility is its biggest strength. It's become my go-to for a few key tasks: Semi-Permanent Laptop Storage: I leave it plugged into my laptop to carry files I need on the go, effectively expanding its storage without a bulky external drive. PC Building & Maintenance: It's the perfect drive for flashing motherboard BIOS updates on my PC builds. Media Playback: I load it up with movies and TV shows to plug directly into my smart TV's USB port. It handles 4K playback without any issues. A Note on Build and Heat The two most common concerns with this drive are its plastic build and the heat it generates. Yes, the all-plastic construction feels a bit delicate, so I wouldn't recommend putting it on a keychain that gets tossed around a lot. And it does get quite warm during long, sustained file transfers—that's normal for a drive this compact and fast. In my experience, it has never been hot enough to cause concern or impact performance. Final Verdict: The Best Low-Profile Drive Out There If you need a massive amount of storage in the smallest possible package, the SanDisk Ultra Fit is the undisputed champion. It's perfect for expanding laptop storage, for use in car stereos, or for anyone who needs a reliable, high-speed drive that stays out of the way. The convenience and performance it offers are well worth it.

Very nice flash drive. Purchased the 128 GB version. Quick , compact and easy to use. No computer wiz here, if I can, you can. Predominately use for photos , don't lose your memories. A small investment to care and share them. The compact size makes it easy to keep this drive in your laptop. Doesn't get in the way at all. San disk is well known for it's quality and reliability. Just plug it in and let the saving begin.

Great price for 512GB, but performance is really mediocre at best. Write performance does burst immediately to 120-140MB/s, then slows to a sustained 80MB/s. Anyone else testing this and posting faster write performance probably is testing incorrectly. I purchased this for a home lab server to dump VM backups to locally without having them be on the local drive or having to push them over the network. Seems to work fine, although not very fast. The compact nature of this is nice so it doesn't cause problems when working around the device. For the price, I'm happy, although I may have opt'd for something a bit faster if the write performance had been known.

Nice and compact. Somewhat slow but so far it's been working great. I'm glad that it uses the more robust USB-A and not USB-C which is too fragile. All my Sandisk storage drives have been very reliable so far. I fell postive about this one too. I am happy with it so far.

Sensacional para transportar grandes ficheros, toda la colección de música o varias películas en FHD. También puedes aumentar fácilmente la capacidad de almacenamiento del portátil. Y aún sería mejor si hubiese de 2Tb

I specifically searched for a USB-C flash drive and this item came up in the results. Based on the product title, photos, and description, I believed it was a USB-C drive. However, when it arrived, I was disappointed to find that it is actually a USB Type-A drive. Nowhere in the listing did it clearly state that it does not have a USB-C connector, and the images were not clear enough to show the difference. This is misleading and frustrating, especially when you rely on Amazon’s search and product listings to be accurate. If you're looking for a USB-C drive, this is not it.

Muy buen producto!

This storage is exactly what I was looking for - small and compact so it won't get knocked out of my computer and damage my files, with plenty of space to store my teaching documents and transfers files at lightning speed. I'm so happy with this purchase. Highly recommended Ǔ

great size and qty