Re: CompUSA USB 2 & firewire combo card

On Sun, 2005-07-10 at 09:51 -0800, Damien Hull wrote:
> Enkidu wrote:
>
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> >Damien Hull wrote:
> >
> >
> >>I've been having doubts about this card. The packaging says it's USB 2
> >>but according to lspci 3 of the 4 usb ports are usb 1.1 and one is usb 2.
> >>
> >>We ran a test using a usb drive and a program called usbview. According
> >>to usbview 3 of the 4 ports are usb 1.1. However, when we plugged in the
> >>usb 2 drive it came up as usb 2. It was listed under something called
> >>EHCI. The other ports were labeled OHCI and the on boar usb was UHCI.
> >>All ports on the combo card put the usb 2 drive under EHCI. Plugging the
> >>drive into the on board usb port placed it under OHCI.
> >>
> >>
> >>
> >
> >EHCI is the standard fair for usb 2, UHCI is typical of intel or via chipsets
> >and OHCI is for most everything else, most notably the nforce chipsets. The
> >ports are actually supposed to read as they do, thee 1.1 ports and one 2.0 port.
> >When a device connects that can support usb 2 then the EHCI controller takes
> >over, whichever port it is plugged in to. Otherwise, the companion controller
> >(OHCI in this case) handles the connection.
> >
> >Art Brown
> >- --
> >- --
> >There is in certain living souls
> >A quality of loneliness unspeakable,
> >So great it must be shared
> >As company is shared by lesser beings.
> >Such a loneliness is mine; so know by this
> >That in immensity
> >There is one lonelier than you.
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> Lets say I plug in 2 usb hard drives and start transferring files. Will
> both drives transfer data at 480Mbits/second or 240Mbits/second?
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I think those things are like any other bus. So much bandwidth on the
bus (480 Mb) and anyone on the bus shares it.

-- 
Jim Gribbin
Prudential Jack White/Vista RE
3801 Centerpoint Dr, #200
Anchorage, AK  99503
ph (907) 273-7348  fax (907) 562-5485
website http://www.JimGribbin.com
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