Trickle Star PC Trickle Saver The PC Trickle Saver is designed to help you reduce energy used when PC peripherals are left in standby mode. It works by automatically switching off printers, scanners, speakers & monitors when the PC is shut down, saving you electricity. Cut down your carbon footprint & save money on your electricity bills with the PC Tricklesaver. This clever device simply attaches to your computer via a USB (Universal Serial Bus) cable, where it determines whether your computer is switched on or off. Even if your computer is off your peripheral devices could still be on standby. To stop this the PC Tricklesaver will automatically turn all of your PC peripherals off too when your PC is turned off.