Our main product - Sentry recovery card has several editions for different users. Its easy operation and efficacious functions make every operator run Sentry within 1 minute and results in a stable system. The Sentry card is a powerful instant recovery system technology for cyber cafes, schools, libraries, companies, etc. It can protect the computers from: * file corruption * unwanted modification * accidental or intentional damage to the hard drives * viruses * hacking * tampering * unwanted software installation * formatting and deleting the hard disks With this powerful protection your computers are maintained in seconds, not hours. With just a single reboot, the destroyed system will be back and recovered to the normal status.