USB Transfers data at a maximum rate of 480 megabits per second.
480 Mbps. USB 1.1 is on 12 Mbps.
A high-speed USB (2.0) has a raw data rate at 480Mbps, and it is rated 40 times faster than 1.1.
USB 2.0 supports a maximum signaling rate of 480 Mbit/s
If you have a USB 2.0 the tranfers rate will be about 480Mbps, where as USB 1.1 is only around 12Mbps. If speed isn't the issue there is no problem as all USB standards are backward compatible and still operate even if it is at 12Mbps. Anything that says Hi Speed USB will be a 2.0.
USB 1.0 and 1.1 had a specified maximum data transfer rate of 12 Mbits/s. USB 2.0 has a theoretical maximum data transfer rate of 480 Mbits/s USB 3.0 will have a theoretical maximum of 4.8 Gbits/s.
All of the USB devices themselves as Hi-speed. USB 3.0, is the recent hi-speed USB.
interface rate, USB 1.1 (12 megabits/sec) , USB 2.0 (480 megabits/sec), USB 3.0 (up to 5gbps )
The theoretical maximum data rate in USB 2.0 is 480 Mbit/s (60 MB/s) per controller and is shared amongst all attached devices. Some chipset manufacturers overcome this bottleneck by providing multiple USB 2.0 controllers within the Southbridge. It should be noted that USB 3.0 has now been released and operates at a theoretical top speed of 5Gbit/s.
USB 1.0 has a specified data rate of 1.5 Mbit/s for "low speed" and 12 Mbit/s for "full speed" USB 2.0 has a maximum speed of 480 Mbit/s which has been being called "high speed" however, USB 3 is on the way, (to be called "super speed") and will be capable of transfer speeds up to 5.0Gbps in full duplex. FYI: 8 bits = 1 byte (roughly) 1,024 bytes = 1 Kb (kilobyte) 122Kb = 1 Mbit
USB 1.0 has the maximum speed of 1.5Mbps. USB 1.1 is a bit faster at 12Mbps. USB 2.0 is the fastest currently at 480Mbps. USB 3.0 will be released in 2010 and that will have a maximum speed of 4.8Gbit/s.
The Generic USB Hub is a HI-SPEED USB device and will function at reduced speed when plugged into a non-HI-SPEED port
It doesn't matter what is the speed is on the USB it depends on the computer's speed on its hardrive, internet, or both the speed is not based on the 2.0 USB, is the computer either its old or new or in between.
Super Speed USB is faster and is usually identified by a blue port or wire. Basically USB 2.0 is High Speed (480Mbps) and USB 3.0 Super Speed (5Gbps).