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Date: Sun, 24 Apr 2005 00:22:43 -0700
From: Julian Elischer <julian@elischer.org>
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To: Kazuhito HONDA <kazuhito@ph.noda.tus.ac.jp>
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Subject: Re: need help w/logitech 350 usb headset on 5.3-Stable
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Kazuhito HONDA wrote:

> 
> 3. Is your USB controller ohci or uhci?
>    uhci has no problem. But ohci has the full duplex problem.
>    microphone and speaker can't be use simultaneously without full duplex.
>    Then a USB headset can't be use with ohci.

Has anyone tried ehci (with a 2.0 speed translating hub)?

> 
>    But if you want to use it as headphone only, or microphone only,
>    ohci has no problem.
>