Features: 1) 4 USB ports club type 2) Up to 500mA and auto-current sharing by devices request 3) Over current protection 4) Support both full-speed 12MBps and low-speed 1.5MBps transfer rates 5) Chains up to 127 USB devices 6) Truly plug and play automatic system configuration 7) Windows 98, 2000 device drivers automatic installation 8) USB and ACPI compliant 9) Net: 40g