Package List : 1x 4 Port 180 ° Rotation USB Extender Hub (As the Picture Shown). Compatible with all USB 2.0 devices, such as Mouse, Keyboards, Card Readers, Laptops, Hard Disk Drive, Desktops, Printers Etc. Plug and play : Use 4 USB devices at the same time, no need to download software or drivers, just plug it in and use it, 4 USB 2.0 ports super speed expansion. USB Extender : Extend 1 hub to 4 USB 2.0 ports, is especially suitable for connecting multiple USB devices, which can be used at the same time, work or entertainment. USB 180°Rotation : With a unique process design, the usb port can be rotated 90°/180° degrees, can effectively avoid the collision of multiple devices connected.