Rosewill 7 Ports USB 2.0 Hub with Power Adapter (RHB-320W) Compliant with USB Specification Rev. 2.0 (Data Rate 1.5/12/480 Mbps) Backward Compatible to USB 1.1 7 (Max.) downstream facing parts high-speed (480Mbps), full-speed(12Mbps), and low-speed (1.5Mbps) transaction Supports self-powered mode & Switching Adapter Plug & play and Hot Swapping Cable Length: 1 m The Rosewill RHB-320W features 7 USB 2.0 downstream ports for easy access to a variety of USB devices such as your storage device, scanner, printer, external optical drive, and digital camera The USB 2.0 interface enables high data transfer speeds of up to 480Mbps so you save time while copying or moving data Equipped with a 5V, 2A power adapter, the Rosewill RHB-320W USB 2.0 hub guarantees the electric current stability and the effective operation of connected USB devices