Item Name: Switch Cord Data Extension Cable Charge Cord Extension USB Extender Cord. Description Item Type: USB 2.0 extension line100% brand new and high quality.Product length: L=50CM/100CM Wire specification: 2464 28# (7pcs 0.12 copper wire) 4 cores OD:3.2MM bare copper black round wireSpecification Description: USB A/M+304 switch+USB A/FFeatures:Error-free data transmission. It can be used for Raspberry pi, as well as other similar application, like USB lamp, usb fan, Driving Recorder, LED Desk Lamp etc. Not only for power supply,but also for data transmission. With LED indicator,you can see the working status. This USB 2.0 Extension Cable for USB charger,when fully charge,turn off switch,no need to put out USB cable Support for PC and Mac users to bring USB peripherals,such as hard drives, printers, mouse, keyboards, and USB hubs. Package Included:1 x USB Cable