https://www.mobileplanet.com/produc...asp?code=138247
If you've been looking for a way to convert that awkward ExtUSB port that HTC slapped on their latest batch of devices to something your headphones will work with, then this is the product for you. Expansys (or Mobile Planet as it likes to be called now) has a handy little converter that will toggle the ExtUSB port to a more standard 3.5mm plug for use with your headphones. It doesn't support a microphone, so you'll have to remove it to talk on the phone. It's priced at $16.95, which seems a little expensive to me, but it's not like there's much in the way of choice.
Source: pocketnow.com
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"I have no special talents, I am only passionately curious" - Albert Einstein