I have had a switch for about a 1-2 years and this started happening about a week ago. If i format the Micro SD on the switch, The PC won`t assign a drive letter and when i try to do it manually, It says 'The system cannot find the file specified'. And if i format the Micro SD to FAT32 on the PC, The switch says i have to format it. Can someone help me? OS version is 8.1.0