PRODUCT NAME： USB MOUSE PAD ITEM NO： TNDUSB-MP01 DESCRIPTION　 1. one upstream port (USB-A male) and four downstream port (USB-A male) as standard; 2. LED indicator to check uplind/downport communication & OCP status easily; 3. Each down stream port with OCD (Over Current Detection) and OCP(Over Current Protection) function; 4. Self-powered mode mimicking, (driving+5V DC total mini, 500mA front host PC), no external power source needed; 5. Supporting both full-speed(12M bps) and Low-speed (1.5 bps) 6. Working with windows98/2000/Me/XP and MAC OS 8.5-I book,Powerbook, iMAC G3, G4