... reader, USB mouse, USB Keyboard, Scanner, Digital camera USB audio card , Hard disk ect. Provide up to 500ma per port ... . Supports up to 127Hi-Speed devices.Transfer face: USB2.0/USB1.1Operating system: Win95 ... 98SE/Me/2000/XP, Linux2.4andMac os8.5 VASTA highTransfer speed: up to 480Mbps, Power: USB 5V/600ma Power outpu ... HUB, 4ports USB HUB, real USB2.0 hi-speed,plug and play