and high quality. The USB cable with switch. With this, the days are gone that you have to plug and unplug the USB cable, just a slight press; the operation will start/end. It can be used on , as well as other similar application, like USB lamp, usb fan, Driving Recorder, LED Desk Lamp etc. Error-free data transmission. 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 users to bring USB peripherals,such as hard drives, printers, mouse, keyboards, and USB . Item Type: USB 2.0 extension line Use: Computer,Smart Devices Cable length: 100cm color:Black Material:plastic Package Contents: 1 x USB Extender Cord Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.