Here ya go ,,,these are the current terms !
Low-speed device is for 1.5Mbit/s devices (mouse, keyboard, etc)
- Full-speed device is for 12Mbit/s devices (USB 1.1 hubs, some printers, etc)
- High-speed device is for 480Mbits/s devices (USB 2.0 hubs, mass storage, etc)
- OHCI means Open Host Controller Interface and supports low- and full-speed devices
- UHCI means Universal Host Controller Interface and supports low- and full-speed devices
- EHCI means Enhanced Host Controller Interface and supports high-speed devices. They embed a companion controller (OHCI or UHCI) or a USB 2.0 hub to support low- and full-speed devices.
- USB 1.0 device is for USB devices developped using the USB specification 1.0: they can be low- or full-speed (obsolete - not for new designs).
- USB 1.1 device is for USB devices developped using the USB specification 1.1: they can be low- or full-speed (obsolete - not for new designs).
- USB 2.0 device is for USB devices developped using the USB specification 2.0: they can be low-, full- or high-speed. USB 2.0 does not necessarly mean high-speed.
- A USB 1.1 hub connects as a full-speed device. It never converts transactions speeds.
- A USB 2.0 hub connects as a full-speed device on OHCI/UHCI and as a high-speed device on EHCI. When connected as a high-speed device, it converts all low- and full-speed transactions to high-speed.
- A Single-TT USB 2.0 hub shares a single full-speed bus between all low- and full-speed devices.
- A Multiple-TT USB 2.0 hub provides a different full-speed bus to each directly attached low- or full-speed device.
ExtremeUSB ,,is coming on now
Extends the range of USB devices up to 100m using Category 5 cable
Ideal for OEM integration of ExtremeUSB® technology where maximum flexibility of design is required
Supports up to four high-power USB devices
Supports local, remote or dual powering options
Fully compliant with USB 1.1 Specification
Number of USB devices can be expanded using standard USB hubs
This is pretty funny ! Swiss Army Knife connects with the future
http://www.swissinfo.org/sen/Swissinfo. ... id=4791994