Hi-Speed Universal Serial Bus hub controller - Application: monitor, device bay, docking station, hub box ; Bus interface: USB at HS (480 Mbit/s), FS (12 Mbit/s) and LS (1.5 Mbit/s) data rates, I2C-bus ; Downstream ports: 4 ; Features: standalone single-chip pure hardware hub ; Operating/supply voltage (MAX.-Vcc,Vp,VDD): dual supply voltages 3.3 V and 5.0 V V; Other features: WHQL for Win XP and Win 2000