SanDisk Ultra Backup 64 GB USB 2.0 Flash Drive SDCZ40-064G-A11

I purchased this mainly for it's reported compatability with a particular router. I did not pay much attention to the description. The drive has far surpassed my expectatons. It not only works well with all of my equipment, it does much more. The backup function was the best surprise. Any time I want to backup I just push the button on the drive and go back to whatever I was doing. It works in the background and I never notice it slowing other processes I am using. I don't remember ever writing a review before, but this product definitely deserves KUDOS. Some may think it a bit pricey but it is actually very competitive or cheaper than other 64 gb drives. If you need a flash drive this size, you will not find better. When I need another flash drive, I know what I will be buying. By the way, Amazon had it to me in a few days even though I selected the free delivery option. Thanks to Amazon for years of snag-free orders.

I didn't buy this flash drive to use 'U2' or for the 'Back-up' feature so I used SanDisk's U2 removal tool and then re-formatted the flash drive to NTSF. SanDisk said that should be fine. After I copied over 7 GB's of data to the drive, I noticed some strange behavior when copying some additional files. Certain files would appear to have been copied but no file size or date would show up for those files, just the file name would be in the directory. I gave it 3 stars out of the benefit of doubt that it may have been good for FAT32 use. I returned the drive and decided to go with a larger 128GB Patriot instead, since the price with rebate on Amazon was pretty good.

For several years, I used an internet-based service to back up my files. In part I used this internet-based service because I wanted the extra security of having my files backed-up off-site. During the typical year, I spent approximately $340 per year. After purchasing the SanDisk BackUp Flash Drive for $150, I canceled my subscription to the internet-based service; thus, saving more than $150 per year. Given the small / compact size of the SanDisk Flash Drive, I can easily transport my backed-up files. And, I do not need to access the internet to back-up my files or retrieve my backed up files. A great product.