Hi,But from the following link, I read " How many USB devices are supported? 
MUSB HDRC controller supports only 2 devices, including USB hub. 
This means, one my connect to DaVinci only one device. With or without hub.
You may connect:

 One device.
 Hub and one device.

It is hardware limitation. No software workaround is present. 
"http://wiki.linuxquestions.org/wiki/DaVinci-Linux_FAQ#How_many_USB_devices_are_supported.3FYou
 mean this one is not correct ?I will try it by myself again since I did not 
success before.Thanks,Bin> From: [EMAIL PROTECTED]> To: [EMAIL PROTECTED]; 
[email protected]> Date: Wed, 4 Jul 2007 09:18:41 
+0530> CC: > Subject: RE: USB Hub> > Hi chandresh,> > download 2.6.20 kernel 
using GIT from (source.mvista.com) this works with 2> devices working 
simultaniously without any issues.> > thanks> regards> yogesh> > -----Original 
Message-----> From: [EMAIL PROTECTED]> [mailto:[EMAIL PROTECTED] Behalf> Of 
Chandresh> Sent: Wednesday, July 04, 2007 8:25 AM> To: 
[email protected]> Subject: USB Hub> > > > Hai,>  
I have been able to connect a USB keyboard and provide input to the DaVinci> 
EVM which I have verified using XServer. I have also been able to connect> USB 
mouse to EVM and check its operation using XServer.> > Since only a single USB 
port is provided on the EVM I am trying to connect> both the Keyboard and the 
Mouse to a USB hub which is connected to the> single USB port on the EVM and 
simultaneously use both.> > Only the first device i.e either the keyboard or 
the mouse that is connected> to the USB hub first works. The other device does 
not.> > Can some one help me with this.> > Thanks A lot in Advance> -Chandresh> 
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