... gift 1.Chinese factory 2.plug and play,driver is not required 3.good for promotion 4.OEM ser 4 ports usb ... second generation controllerNo external power supply necessary Driveless hot plug and playTransfer rate,high speed(480Mbps),full speed(12Mbps)Connectible onto ... on any PC,notebook,palmtop,PDA,Ibook,cube,power Mac and notebookDelicate design,exquisite appearance,especially for office staffThe super ...