SANDISK 128GB Ultra Flair USB 3.0 Flash Drive, SDCZ73-128G-G46, Black

The SanDisk is a stylish, metal-clad drive that feels far more premium than its budget price tag, offering a reassuring durability that plastic competitors simply lack. For everyday tasks like moving documents or grabbing a movie to watch on a TV, the read speeds are snappy and reliable, making it an excellent addition to any keychain thanks to its sturdy loop. However, that sleek metal casing acts as a heatsink, and it gets alarmingly hot during use—often becoming uncomfortable to handle if you’ve been transferring data for more than a few minutes. This thermal issue isn't just a tactile annoyance; it directly impacts performance, causing write speeds to throttle and crawl during large file transfers as the drive struggles to cool down. It is a fantastic, nearly indestructible option for quick, light tasks, but if you plan on backing up massive folders, patience and a high heat tolerance are required.

I needed a reliable flash drive for moving big files between my work computer and home laptop, and my old plastic USB 2.0 drives just weren't cutting it anymore. I'm so glad I got this one. The difference in speed is night and day. I transferred a few gigabytes of photos and videos in just a couple of minutes, which would have taken forever on my old drive. The metal casing feels really solid and premium, much better than the cheap plastic ones that feel like they'll crack on my keychain. It does get a little warm when you're transferring a lot of data, but I looked it up and that's normal for these metal drives. It's compact, looks great, and the 128GB size is more than enough for what I need. It's a no-brainer for the price. I've been holding onto a trusty (but incredibly slow) 16GB flash drive for years. The time finally came to upgrade when I had to transfer a video file that was bigger than the drive itself! I grabbed this SanDisk Ultra Flair, and wow, what a difference. First off, the speed is fantastic. No more waiting around for what feels like an hour for files to copy. It's plug-and-play, and it just works. The design is also a huge plus. It’s small, has a nice weight to it because of the metal, and looks way more professional than my old plastic one. My only minor gripe is that it's small enough that I'm worried I might lose it, so I put it on my keyring immediately. It's a great piece of tech and makes me wonder why I waited so long to upgrade.

This SanDisk flash drive is a reliable device for everyday storage. The sleek, durable metal housing feels solid in hand and easy to carry around. The read and write performance of this USB 3.0 is fast, ideal for the storage of movies and backup files. USB 3.0 is faster compared to USB 2.0 devices. It's also fully backward-compatible with USB 2.0 ports, but will operate at reduced speeds on those older ports. The connectivity to a USB 3.0 port or higher can achieve significantly higher throughput, which speeds up transferring large files like videos, photos, and backups compared with older USB standards. Some flash-drive lines come in multiple colors, this flash drive focuses on this metallic black/silver styling. Overall, it's a solid, budget-friendly choice for extra portable storage.

This is amazingly fast, 3.9GB video file in about 7 seconds, it was seriously impressive. I have only used it in Fat32 format and I totally LOVE IT!! --- And, it is so small it is actually cute.

Thought the 512GB was a counterfeit. But have proven it's not using simple tools that did write/read testing. For the most part, I got about 50-60MiB/s Write, and around 100-160MiB/s read, sequentially. Formatted (ExFAT/NTFS) it's about 460GB which has provisioning for extra spare blocks to lengthen lifespan and speed. Overall. I give is a 4-stars. 5 for being what they said it is, 4 stars for the slightly slow write speed. This is because the drive is fresh, and this definitely isn't NAND memory. Even TLC NAND is faster, but it may be adequate enough. For my wife, long-term photo storage is what I got it for, and it'll fit. Not only isn't small, but the relative storage size is huge, and cheap, and I can see this used for a lot of trading media or swapping out backups overtime cheaply. It's likely many degrees higher able to survive fires in a fire lock box than a hard drive, and tiny enough to throw on a keychain for imaging with something like ventoy or a quick and dirty linux/windows boot disk. It seems to be of decent sandisk quality, and time will tell, but maybe for a single or dual-disk raspberry Pi server, or even a server intenal boot disk for diagnostics/headlsess server, this is likely a great use for that. it's fast enough for a raspberri pi 4 and small enough to not be a nuisance. also great if you have a car that needs to offload dashcam footage like a tesla or some retrofitted car entertainment systems. It doesn't generate too much heat, even after me running full tests, and can be used as a quick and small OS X bootable disk if you are at a university with a lot of storage space. They seemed to have design some reliability thinking with the spare blocks being reserved, meaning it should last a long time. It should be able to do most file systems, but for FAT32, you may need to create a partition for that, but you can do a lot of 32GB FAT32 partitions if you need to, and reserve the rest for Linux, MacOS or Windows-based filesystems for bootable and other data seperate. Could be used to make a kiosk in public too with right tools while being able to hide it, or pull it quick.

UPDATE: February 1, 2026: I have to update my review and change my rating from 4 stars to 5 because of something I discovered about the heat issue I first reported. First of all, I ordered this 128GB flash drive multiple times: (1st drive ordered on September 14, 2025; the 2nd on October 7, 2025; and 2 more on December 14, 2025) - and I found that the **heat issues disappear** depending on the peripherals that you connect them to. When I used these drives with my Targus Docking Station, they ran hot, but they're nice and cool with my Anker Powered USB Hub (7 Ports USB 3.0). I'm not a hardware expert, so I'm guessing that the reason that these drives run at such cool temperatures now with the Anker hub (with 7 ports) is that this hub has its own power source (meaning that it has to be plugged in to an outlet versus drawing its power from the computer to which it's plugged in), whereas the Targus dock's only power source is the computer itself. Also, just wanted to add a note about the reviews that said you have to download & install software to use these flash drives: Tip 1: **You do not have to do ANY of that.** You can simply reformat these drives on your OS and then choose whatever format suits you. Tip 2: If you want a perfectly clean drive, don't use any of the software that comes with any drive. In fact, MAKE SURE you reformat every drive as soon as you unpack it. You'll end up with a device that has nothing extra: no apps, no software, no spyware. There, problem solved. Personally, I began formatting every external flash drive & external hard drive that I recently bought as ExFat so that those drives will be fully compatible with both Windows & Mac OS (meaning that you'll be able to copy files TO and FROM the drives on both of those OS's). -------------------- For full clarity, the specific drive I ordered was the 128GB Ultra Flair USB 3.0 Flash Drive (SDCZ73-128G-G46, black), on September 14, 2025. I formatted this drive as ExFAT so that it would allow me to have read/write capabilities on both Windows and MacOS. Been using it for almost a month with both a 5-year-old Mac laptop (Big Sur), and a brand new Mac (running Sequoia), and it has zero issues with reading, writing, and transferring files from multiple NTFS external drives (which range between 6TB to 20 TB) and the MacOS versions mentioned above. I can play (and edit) large media files directly on this drive and can use it to interact with every filetype imaginable. (Will update this review in a week or so after receiving the Windows computer I recently ordered to report on how it performs on Windows). In terms of speed: Downloads sent to this drive had severely limited transfer rates. Switching the same downloads to an internal drive or other external drives immediately gave me far higher speeds than what the SanDisk flash drive could handle. One thing I'd like to add is that on Mac, this little drive runs very hot to the touch even when idle. After testing this, it seems that prior use bumps up the temperature and keeps it hot even after closing media files that were in use.

A typical SanDisk product. Tests well in Validrive. Good capacity. Good write speed. Easy to handle. Useful for home computer file backup. Expect it to hold up well.

Fast, Compact, and Reliable Storage Solution This SanDisk 64GB Ultra Flair USB 3.0 Flash Drive has quickly become my go-to for transferring and storing files. The first thing I noticed is how fast it moves data—USB 3.0 speeds really make a difference compared to older drives. Large video files and photo collections copy over smoothly without long waits. The design is sleek and compact, making it easy to keep on a keychain or slip into a pocket. The metal casing feels solid and more durable than the all-plastic alternatives I’ve owned in the past. I also appreciate that SanDisk includes SecureAccess software for those who want to password-protect files—handy if you plan on carrying sensitive documents. One thing to keep in mind is that the metal body does get a little warm during heavy transfers, but it’s never been uncomfortably hot in my experience. Also, as with any small flash drive, it’s easy to misplace, so I’d recommend attaching it to something you won’t lose. Bottom line: A fast, well-built, and portable flash drive that offers excellent performance for everyday file storage and transfers. Great value for the price.

Use it daily for file backup's at work, nice and fast, no issues so far, very happy

Excellent

Excelente produto. Possui 128GB realmente. Dentro da embalagem, vem um link para baixar um produto da Sandisk, o Rescue Pro Deluxe, recuperador de dados.

Quality - very good Appearance - almost good Performance - awesome Connectivity - instant My favourite brand - SanDisk Must buy it. Thanks to the Amazon Team.

Ottoman prodotto