Feature &Advantage: (version 1.1) 4 port USB HUB 1. Fully compliant with Universal Serial Bus Specification version 1.1and 2.0 2. Single chip integrated USB hub controller with embedded proprietary processor 3. Supports four bus-powered/self-powered downstream ports. 4. Driveless Plug & Play 5. USB 4Port for varieties of external USB devices connection demand. 6. Driveless Support for Windows VP/200,Linux 2.4 & Mac OS 8.5 Version Windows 98SE supported with USB device driver. STEREO SPEAKER 1. USB stereo Speaker Powered by USB or External Power supply 2. Inner USB Stereo Speaker suitable for listening Internet radio or stereo music 3. Outer mini microphone out put connection capability 4. Suitable for CD player, MP3 and MP4. MOUSE PAD 1. Black compact panel with smoothly movement which suitable for all kinds of mechanial mouse or optical mouse use 2. Flash blue light or seven color light around the pad 3. Dimension:W248mm*D213mm*H18mm 4. Allow matching outside power of DC 5V/2000mA Feature &Advantage: (version 2.0) 4 port USB HUB 1. Adds4 USB 2.0 Hi-Speed port 2. Fully compliant with USB 2.0 specification, backwards compatible with USB 1.1 3. Individe up to 500mA per port sufficient for diverse devices 4. Driverless ,hot plug & play 5. Supporter Windows XP,2000,ME,Linux2.4. & Mac OS 8.5 or above STEREO SPEAKER 1. USB stereo Speaker Powered by USB or External Power supply 2. Internal stereo drive and microphone builded for internet charting, 3. Internet tadio channel using 4. Ear Phone ,Mirophone output connection capability 5. Suitable for CD player, MP3 and MP4. MOUSE PAD 5. Black compact panel with smoothly movement which suitable for all kinds of mechanial mouse or optical mouse use 6. Flash blue light or seven color light around the pad 7. Dimension:W248mm*D213mm*H18mm 8. Allow matching outside power of DC 5V/2000mA