I just picked up 4 TBs on sale last night. This is in addition to 1 TB I had before. Anybody have any experiences with these? The software did not provide a backup and neither the software or the backup area in my PC seem to pick it up at all. They say its disconnected while its hooked up and powered on. I don't see an on switch for it either. Maybe its ue to my PC being USB 2 instead of USB 3? Thankfully, Windows Explorer seems to solve this problem so far, but I doubt its boot ready doing it that way. Moving my whole C drive over which is 900 GB, but the transfer that is still going says only 503. Could that be due to a failed drive maybe?