> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Alan Stern > Sent: 2006-Aug-15 16:10 > To: Tony Smolar > Cc: linux-usb-users@lists.sourceforge.net > Subject: Re: [Linux-usb-users] disabling ehci_hcd for certain devices? > > On Mon, 14 Aug 2006, Tony Smolar wrote: > > > >It could a problem not so much with the cable itself as with the > > >termination electronics at the point where the cable joins > the device. > > > > > > > > Hmm, that got me thinking... USB headers on motherboards > usually come > > in pairs. I have two frontal ports + this card reader. > The front > > ports are paired to a header, but the card reader is not > paired with > > anything, could that cause termination problems? There's > no way to > > configure termination on the device itself. > > The card reader might be paired with something on a different > side of the > case. However I don't think any sort of termination is needed for > unconnected ports in general, although I might be wrong about that. > > Just because there's no way to configure the termination on > the device, > that doesn't mean it is correct. But you would need more electronics > engineering skills than I have to be able to test or fix it.
You never terminate any unused USB port. Ever. Dave ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
