Fully compliant with USB 1.1 and 2.0 specifications Can connect up to maximum of 127 USB devices to PC through daisy chain Increased bandwidth of 480Mbps (exceeds that of IEEE 1394 firewires with 400Mbps Allows to connect devices that consume a great deal of bandwidth such as external storage devices, scanners, printers to computer Allows to connect devices that consume more bandwidth like DVD/CD-RW/MO (magneto-optical) drives, and digital cameras/camcorders to computer High-speed of 480Mbps data transfer rate (12Mbps of USB 1.1 and 400Mbps of IEEE 1394 firewires) Four external auto speed selectable USB type A downstream ports, supporting 1.5, 12, and 480Mbps Supports Win 98, 98SE, 2000, ME, XP, and iMac Supports Plug-and-play, no need power supply Customized logo printing service available Various colors are available Dimensions: 9 x 3.8 x 1.2cm Weight: 45g