Hi-Speed 7 Port USB 2.0 Hub +Power AC Adapter for PC USB 2.0 and USB 1.1 compliant and USB-IF certified. Supported data speed: 1.5/12/480 Mbps. One upstream and seven downstream ports. 8 luminescent LED lights. Supports both bus and self-powered (automatic switching power adapter included). Over-current detection and protection for each downstream port. Hot-swappable plug & play connection. Daisy-chain connection of up to 127 devices. Dimensions: 100 x 70 x 20 mm. Work with Windows 98/NT/2000/ME/XP. Package content: 1 x hi-speed 7-port hub with led lights, 1 x USB 2.0 connection cable, 1 x power adapter, 1 x installation guide. Brand new, 1 year warranty!