Features: brand new and high quality It can support multiple USB extensions at the same for time, such as camera, mouse, keyboard, computer lamp, MP3, voice recorder. Plum-shaped pocket shape, beautiful appearance design, easy to carry. The computer automatically recognizes, no external power supply, no driver, plug and for play. Support Win95/98/ME/2000/XP, Linux2.4 and for Mac os8.5 or above. The USB interface can be expanded into 4 working USB interfaces, and 4 USB interfaces can be expanded, using the second-generation USB adjustment device. USB extension. Supply current of 500mA per port. Support USB1.0/1.1, for USB2.0, speed up to 5 Mbps. Specifications: Material: ABS Weight: 70g Size: 9.5x3.5x2cm/3.74x1.38x0.79inch Length: 45cm/17.72inch Color: Black/White Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB Hub