Universal serial bus (USB) 2.0 is complete overhaul of universal serial bus input/output bus protocol Allows much higher speeds than the older USB 1.1 standard Broaden the range of external peripherals that can be used on a computer Hard drive can easily hit the USB 1.1 bottleneck whereas its now becomes more 'usable' under USB 2.0 conditions USB 2.0 has raw data rate at 480Mbps and it is rated 40 times faster than its predecessor interface, USB 1.1, tops at 12Mbps Originally, USB 2.0 was intended to go only as fast as 240Mbps, but in October 1999, USB 2.0 promoter group pumped up the speed to 480Mbps One 28AWG twisted pair (data) and two power conductors Overall shield: overall aluminized polyester shield with drain wire and tinned copper braid shield