USB HUB is a device that can expand one USB interface into multiple (usually 4) and make these interfaces available at the same time. Hub is also known as a hub, which uses a star topology to connect multiple USB interface devices. USB HUB is based on the 4 USB interfaces provided by the GL850G chip for expansion. GL850G has product features such as low power consumption, low temperature and reduced number of pins. USB HUB can be connected to computer desk lamps, computer fans, MP3, U disk, voice recorders, digital cameras, etc. Product parameters: Working voltage: DC 5V USB port: 4 USB expansion ports, can work simultaneously. Output current of each port when working alone Up to 500mA, can be used for USB lighting and related USB devices Driver: Driver-free, computer automatically recognizes and installs, plug and play Protection: Built-in current overload short-circuit protection device Speed: Support USB2.0, up to 480Mbps, backward compatible with USB1.1 Supported system: Win95/98/Me/2000/XP, Linux2.4 and for Mac os8.5 or above Color: blue Material: PCB There are differences in printing and silk-screen printing due to different batches, which will not affect the use; there are color differences in the actual product due to different light or display. Package Contents: 1 x USB2.0 hub Only the above package content, other products are not included. Note: Light reflection 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.