4 port usb hub 1.comply with usb 2.0,1.1 2.plug and play ... 4.OEM services. 4 port usb hub Features: Expands 4 USB port supply up to 550Ma current per port version 1.1/2 ... rate,high speed(480Mbps),full speed(12Mbps)Connectible nto USB ports on any PC,notebook,palmtop,PDA,Ibook, ... 6 or aboveHot-swapping capabilityHi-speed downstream ports with USB a female connectorLogo printing service are availableIt is ...