Description: *Expand by connecting up to 4 USB 2.0, or 1.1 devices to any USB 2.0 capable computer *Supports USB 2.0 transfer rates up to 480 Mbps. Backwards compatible with 1.1 devices and hosts * Reverse Compatible with USB 1.1 * 4 per-port LEDs. Sleek black finish. All 4 ports on one side to minimize cable clutter. * Compatible with your Win95 osR2/98SE/Me/2000/XP/VISTA,Linux2.4 and Mac os8.5 above Specification: Size: Approx 100*44*25mm/3.9*1.7*0.98" Plug and Play, no driver needed. Built-in over-current protection Package Includes: 1 Piece 4 Ports USB 2.0 Hub