The majority of viruses are effect from USB Pen Drives, Micro SD cards, types of external drive may damage PCs. The PC users some times using of unbranded drives or carrying virus effected files like games, movies, software, have more chances to damage PC. Whenever PC users connect Pendrive to PC they have to scan with "USB Disk Security" to remove virus from Pendrives.
This USB Disk security scans yours Pendrives very successfully and removes all types of virus from external drives.
Scan your External drives