Save energy making all your computer devices turn TOTALY off (not standby mode) when u shutdown the computer. Read the Instructions for detailed info. Printers, routers, desktop lights, switches, speakers, mixers , usb hugs ... I wait for your questions, suggestions and upgrades. Ahorra energia haciendo que todos los aparatos se apaguen por completo (no en standby) cuando apagas el ordenador. Impresoras , router, lamparas de escritorio, switch, altavoces, equipos de musica, mezcladores, ladrones usb ... Espero sus preguntas, sugerencias y mejorasYou will need: Notice some boards keep giving current to the USB ports when the computer is off. You can change this on BIOS or with a jumper on the main board, depends of the board, read the manual.