Focus on - The Upgrade of USB
On October 12, at the USB 2.0 Developers Conference in San Diego, the promoters group released the USB 2.0 specification draft, which stated that the target speed of the new bus would be between 360 to 480Mbps, 30 to 40 times faster than USB 1.1.
Other than an upgrade in speed, there will be no changes to the technology or the design. USB 2.0 and 1.1 peripherals, hubs and ports will be completely compatible. However, while owners of PCs with 1.1 bus ports will still be able to use 2.0 devices, they will not enjoy the increased speed. Additionally, the ability for USB to bus-power devices, currently at a 500mA max, will not increase. In other words, self-powered devices, such as scanners and Zip drives, will still need their own power source.
The jump in speed will not significanty affect devices such as keyboards, mice and joysticks, which are sufficiently handled by 1.1, but may increase the functionality of devices such as digital cameras, scanners, external storage units, interactive gaming and broadband Internet connections.