... plastic casing, Customers can choose injection.2.Product is suitable for USB flash drives, card readers, USB mouse, USB keyboards ... each supply less than 500 Ma.3.With Second USB HUB controller, no driver or plug support the swap, supports ... quality electronic devices to ensure stability.4.Transmission interface supports USB2.0 compatible USB1.1 .5.Operating Systems : Win95 osR298SE2000XP, Linux2. ...