Forcing USB audio ouput - possible?

[3lmo]

Is it possible? I bought this mini USB to 3.5mm adapter (http://cgi.ebay.nl/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=280317508447) and the description said it was suitable for the S710. Actually, it isn't. So I'd like to know wheter it's possible to force the phone to use the USB-output instead of the speaker.

The phone doesn't detect the headset.

Thanks in advance. I tried to find it on the internet, but that didn't work out. My excuse if I missed something.

[torrentonly]

I am not actually expert with that but I think, one of audio part's pin is not connected properly, or some part of electronics is missing. I am suspecting pin 9 marked as S - look at ExtUSB pinout).

[metusmortuus]

I was just about to buy one of those adapters, but now I'm hesitant. Is this a common problem with the s710?

[3lmo]

I am not actually expert with that but I think, one of audio part's pin is not connected properly, or some part of electronics is missing. I am suspecting pin 9 marked as S - look at ExtUSB pinout).

Indeed. I also purchased this one today. (http://cgi.ebay.nl/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=280323115876#ebayphotohosting) It seems to have a slightly bigger connector. It's only 2 dollars so the price isn't an issue, but I just want to have it work. :)

[frauhottelmann]

The description should say extUSB to Audio (if it's not extUSB it might not work).
Look if the pins of your phone are dirty or something.

And no, with an extUSB to audio converter this doesn't happen (so not a common problem)!

[3lmo]

The description should say extUSB to Audio (if it's not extUSB it might not work).
Look if the pins of your phone are dirty or something.

And no, with an extUSB to audio converter this doesn't happen (so not a common problem)!

I don't know, I only got the cable without any description.
http://www.joekingprices.co.uk/IMAGES/3.5mm/3-5mm-mini-usb.jpg

This was the one. The default headset works fine.

[torrentonly]

Look at the USB part if you have 6 little pins in it. If you don't, you haven't ExtUSB converter.

[tobbbie]

Hi 3lmo,

...the one in your post looks like a normal USB connector. There the 5 pins of the USB are used to transport also the Audio (i.e. audio and USB/charge are not possible at the same time). This is used for some devices like Motorola Razor V3 or differently for BenQ E72.
The ExtUSB from HTC has added to the 5 pins of the USB another 6 on the other side of the plug insert. The original 5 pins are used only for USB purposes - not for Audio which uses the other 6 pins. There is info in the net about the details somewhere. Just take care that you get the extUSB type. The second one you got should work (I have the same from the same vendor).
See also this post: http://forum.xda-developers.com/showpost.php?p=3473046&postcount=12

bye
tobbbie
:-)