Searched Forums but didn't really find an answer. When i plug in my new SDS100 to laptop it beeps but no "mass drive" option pops up. but in Windows 11 Home device manger shows under Ports= Uniden Serial Port(com4). Changed to com2(which was free) still no good. In windows explore it does not show a mass storage drive except my SS USB backup drive I unplugged it still no good. I took SD micro card out and was able to read it on laptop. I have Sentinel and ARC536PRO neither sees scanner. I also changed power option on the USB Serial Bus Controllers. A couple times it did pop up on scanner the USB power error. ANY IDEAS. I did back up the MicroSD card. Also, when I purchased it came preinstalled with waterfall I purchased with the scanner.