Excerpt: I purchased two of these drives from B&H. I used the first one less than 5 times and it failed, losing all data at a meeting, very embarrassing. The second one failed in a similar fashion, hardly used it at all. What junk. Far too late to return them. Avoid TRANSCEND products like the plague.
Summary: Died after a few minutes of use. Accepted a formatting. Then tried to add a partition and the drive became unusable. Attempts to initialize and reformat failed on both PC and Macs with all utilities we tried. I have never had a failed USB of any kind so this was shocking. Back it went.
Update - failed after less than a year with very light use.
John F., Newegg
18 February 2014
Summary: Quite a few other users have reported problems, so design and quality control seem to be lacking. Lifetime guarantee, but return shipping charges make that kind of useless.
Pros: Worked when new, used for a short time with only a few small files written to it. Seemed speedy back then.
Cons: Let it sit for a few months in cool protected storage, and when used again the write speed had slowed way down from what it had been. After storing data to less than 10% of capacity no more files could be written to it even though it was still detected as a drive by Windows. Downloaded Transcend'...