Speedwise, this thing literally performs worse than my USB 2.0 Samsung Cruzer of the same storage capacity while writing. As I write this, it is copying 100GB of MP3 files at rates ranging between 700KB/sec and 3.5MB/sec. The USB 2.0 Cruzer would consistently move closer to 5MB/sec. I began around 8pm, and it won't be done before I go to bed tonight. Total estimated time is over 12 hours, so by this math, it would take you a whole entire 24 hour day to fill this drive with music. You might ask yourself if I'm using a 2.0 port, but I assure you I'm not. Just this morning I was copying the exact same files from the exact same source in the exact same fashion to a Western Digital USB 3.0 HDD at 25MB/sec on the same port. I assumed from the product description that this would be faster, but I was profoundly disappointed, and you will be too. If you want to buy a cheap thumb drive, buy a 2.0 drive for half the price. This thing is SLOW! Upside? It's small and has a high capacity. I have yet to determine reliability, but I doubt Samsung would sell me something that corrupted my data like some cheap Chinese piece of garbage. Read full review
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Slow read and writes. My PNY 3.0 runs circles around it. I was using a 3.0 port and barely got above USB 2.0 speeds.
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Wow, best product, best price, never fails, thanks!
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SandDisk usb 3.1 flash drive is fast, you need to format it to full format. It can take hours. It works great for me.
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I can not believe how fast and small this USB drive is especially for the 256GB size.
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