Description: - 2pieces 4 in 1 Micro USB Hub OTG Cable: 3 USB 2.0 ports, 1 Micro USB port, compatible with USB flash disk, keyboard, mouse, card reader, gamepad, printer, etc. - Move files (pictures, music, video) from your phone or tablet and flash drive. Expand your phone or tablet functionality with this USB OTG (USB On the Go) cable. - Compatible with most Android and smart phones with OTG function - When the external USB device power consumption is large (such as mobile hard disk drive, gamepad, etc.), you can connect the external power supply through the Micro USB interface, to achieve multiple high-power USB devices to work simultaneously. - Two-way switchwhen the switch is "Charge", it will charge for mobile phone; when the switch is "OTG", it will provide power for external USB device. Please note smart phone/tablet's charging function and OTG function can not use synchronously. Specification: Cable Length: 20cm Data cable: support OTG function USB interface: Micro USB Package Includes: 2 Pieces 4 in 1 Micro USB Hub OTG Cable Note: Please note it can not support pluging two USB flash disk at the same time.