SENTRY HD RECOVERY CARD, which is an innovative hard disk protection product. It can dynamically safeguard HD data and instantly recover them. There are various modes available for data protection, recovery and updating. It can prevent virus, FDISK, low-level formatting from damaging hard disk data. Moreover, it can protect CMOS settings. No need to remake hard disk, plug and play, occupying no HD space, quick and easy to protect HD data. The products is widely used in schools, governments and public place .