Wireless PC Lock MAIN FEATURES: Computer automatically resumes normal operation when the user is back within an effective range Once the computer enters the lock mode, a password is required if the transmitter/receiver pair is not available to unlock the computer, one transmitter can be shared with several computers Effective range: Around 2M One unique security code, in the transmitter Computer automatically recognizes the code itself Operation frequencies: 315MHz/FCC, 433.92MHz/CE Transmitter power supply: DC 3V Battery usage: Approximately 2, 000 hours Receiver power supply: DC 5V provided by the Computer through USB port Software driver: Supports Windows 98SE, ME, 2000&XP