This morning I downloaded some mp3 files from my home PC and transferred them to another users My Docs/music folder using my Apricorn MicroKey (MK). At work no computer, (that previously recognized the MK as a mass storage device), will recognize it. You can hear what sounds like a disk spinning in the MK, and it lights up when connected to any USB port, but there is no recognition. The mp3 files are still stored on the MK. I reinstalled the USB ports through device mgr., just incase and checked for recognition in disk mgr. with no luck as well. Apricorn states no drivers are necesary, and I've found none posted on the Internet as well. Suggestions are welcome!