On March 12 I ordered two SanDisk 64GB Ultra Fit USB 3.1 Flash Drives, model #SDCZ430-064G-G46, from Amazon. They’ve worked well for the past two months, but a couple of days ago, the main drive that I use wouldn’t respond when I plugged it in. I tried it numerous times on at least four different computers. None of them would even recognize that I was plugging a device in. After about 15-20 times of trying, I accidentally plugged the drive into a USB 2.0 port rather than a USB 3.0 port. That time, for whatever reason, I heard the normal Windows 10 chime I get when plugging in a USB device. The drive was recognized, and I could access my files again. I ejected the drive normally, then plugged the drive back into a USB 3.0 port. It worked just fine. The drive has worked well with several different computers since that time, but the incident has left me concerned about the safety of the data I have stored on the drive. I use SanDisk flash drives and microSD cards exclusively and have never experienced an issue like this before. Is this normal behavior that can occasionally happen or is this indicative of an issue with the drive? Could it be going bad? Should I stop using the drive?