UPGRADED DESIGN: This USB ON/OFF Switch Cable is a upgraded version,Support both Data transmit and power supply.ADAPTER : USB A Male to Female Extension Cord with 304 Rocker Switch. ADAPTER : USB A Male to Female Extension Cord with 304 Rocker Switch and USB 2.0 A Male,USB 2.0 A Female. No need to pull the cable to restart or reboot your devices, just press the button to turn on and off. CABLE GAUGE :28AWG, Length: 39.5inch /100cm, USB Male Connector to Switch:31.5inch/80cm, Switch to USB Female Connector: 5.5inch/14cm. USAGE: When Press the Switch to"-",the cable will be disconneted,When Switch Press to another side without sign,the cable will connect. APPLICATION : It's not a simply USB Extension Cable, but with switch for Data and Power ON/OFF.Works for Driving Recorder, LED Desk Lamp, USB Fan, Bedside Lamp and other computer peripheral low-power electrical devices.