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During the design phase of USB 2.0 the USB-IF insisted on only one implementation. The USB 2.0 HCD implementation is called the Enhanced Host Controller Interface (EHCI). Only EHCI can support hi-speed transfers. Most of PCI-based EHCI controllers contain other HCD implementations called 'companion host controller' to support Full Speed and Low Speed devices. The virtual HCD on Intel and VIA EHCI controllers are UHCI. All other vendors use virtual OHCI controllers.
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http://en.wikipedia.org/wiki/USB#Host_controllers
All your usb connections are 2.0.
If you plug in a 1.1 flash drive it will down clock to that but the connection is still 2.0.
As it says : Most of PCI-based EHCI controllers contain other HCD implementations called 'companion host controller' to support Full Speed and Low Speed devices.
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Asus M4A77D, 64 X2 6000+, 4 GB Corsair DDR2 800 ram, Radeon 5770.
Last edited by pam123; 10-20-2007 at 04:22 PM.
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