Re: USB host controllers


R. McCarty wrote:
> If you look at Universal Serial Bus Controllers category, you'll
> likely see 1 enhanced controller and 3-4 Universal (Non-enhanced)
> Controllers. The way USB 2.0/1.0-1.1 works is the Enhanced
> controller handles all USB2.0 devices. The other 3-4 are the
> lower speed ports. When you plug in a USB 2.0 device the device
> itself identifies whether it is USB 2.0 or Full Speed. This is how
> Windows triggers the warnings about Device Speed connections.
> Most recent motherboard USB design allows for all ports to run
> at either USB2.0 (High Speed) or USB1/1.0 (Full Speed).

Ah, you were posting while I was typing. This confirms my observation
that there is no correlation between a port and a controller.

.

Relevant Pages

  • Re: Windows thinks USB2.0 ports are USB 1
    ... thinks that I have USB std ports intead of 2.0. ... > deleted all the controllers and ports and so on and reloaded WInXP. ... > rediscovered all the controllers as it had before but it installed a PCI USB2 ...
    (microsoft.public.windowsxp.general)
  • Great Article on USB 2.0 and Intel Motherboards
    ... Controller and three standard USB Universal Host Controllers. ... port appeared to have the USB 2.0 driver. ... USB 2.0 controller and three (or five, if you enable all the ports) USB ...
    (microsoft.public.windowsxp.basics)
  • The case of the missing USB controllers
    ... The machine has several USB controllers and FreeBSD ... I have the verbose dmesg output for a successful boot here: ...
    (freebsd-current)
  • Re: Active home pro stopped working II
    ... is just plugging the cm15a to a different USB port on your PC. ... Tim Dolan wrote: ... All my x10 lights etc work via the hand held controllers and the plug in controllers. ...
    (comp.home.automation)
  • Re: Cant Find Root Hubs
    ... [[In Device Manager, USB game controllers are listed under Human Interface ... If you do not see USB Root Hub, ...
    (microsoft.public.windowsxp.help_and_support)