PLUG AND PLAY: Simply connect the micro USB male port to your host devices and the micro USB female port to your usb power cable, then it is ready to go | COMPATIBLE SYSTEM: Specially designed for adding any USB peripherals to your host devices, suitable for Android, Windows and other systems | EXPANSION CAPABILITY: Add peripherals to your host device.as keyboards, mouse, flash drives (Format must be FAT32), external hard drives, USB card readers, game controllers or whatever to your host devices | PROVIDE POWER FOR USB PERIPHERALS: Make sure your device's battery will not run out as quickly as other ordinary OTG cables | NOTE: Check your device supports OTG function, will not charge phones or tablets.