The HDSafeTM allows users to prevent continual hard drive changes or deletions. When the HDSafeTM card is installed, deleted or corrupted files will be restored to their original state. To achieve this, simply restart the machine, and it will return to the original state it was in before the changes were made. Specification: (1) Plug and play (2) Express installation and Keep Original Data (3) Integrated Software with Hardware (4) Instant Protection (5) CMOS Protection (6) Authorization Management (7) Virus Protection (8) Various Recovery Mode (9) Minimum Hard Disk Space For Installation (10) Support Windows9X/Me,Windows NT/2000 and Windows XP (11)Support BIGDOS,FAT16,FAT32 and NTFS (12)Support SCSI,EIDE,IDE,S-ATA hard disks with different capacity