The use of plug and play design enables this bub to be used easily without driver and additional power. With 7 ports design, this USB hub can meet the multi-port expansion requirements. You can use it more conveniently as it comes with a switch. It is constructed of ABS material. The length of the product is 165mm, the width is 35mm and the height is 25mm. The hub is compatible for Win95 sR2/98SE/Me/2000/XP/for VISTA, for Linux 2.4 and for Mac OS 8.5 or above, and is suitable for most USB devices, such as U disk, mouse, keyboard. Item Name: Hub Material: ABS Interface: USB 2.0 Transmission Rate: Full Speed of 480Mbps, Medium Speed of 12Mbps, Low Speed of 1.5Mbps Power Supply: USB 5V/500mA Operating Temperature: 0 Degrees Celsius - 70 Degrees Celsius Storage Temperature: 10 Degrees Celsius - 90 Degrees Celsius Use Humidity Range: 10%-90% Storage Humidity Range: 10%-90% Operating System: for Win95 sR2/98SE/Me/2000/XP/for VISTA, for Linux 2.4 and for Mac OS 8.5 or Above Features: 7 Port, Plug and Play, Portable Size Details: 16.5cm x 3.5cm x 2.5cm/6.5" x 1.38" x 0.98" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Hub