1. Mousepad calculator with 3 USB ports & blue mood light
2. Fully compatible with USB USB1.1 specification
3. Link up to 127 Hi-speed USB devices
4. Transfer speed up to 480Mb
5. Direct plug-in, most suitable for notebook PC / PDA / Pocket PC / Hand Held PC / Palm etc.
6. support plug-and-play and hot swappable
7. iMac system or IBM PC with USB host connector.
8. Compatible with Windows® 98/ME/2000/XP and Mac OS9.0 or above.
9. Unit size:L21xW18xH1.4CM

Remark:
USB HUB VERSION 1.1