After emailing Hauppauge to ask what cards were compatible with Expression encoder, I heard back from a Jerry Fox who said
" wrote:On Tue, Nov 15, 2011 at 15:29, Jerry Fox wrote:
> The HVR 1850 or the HVR 1250 will work but you can only use the composite or
> Svideo input and it will be video only, no audio.
> Jerry Fox
We picked up a Hauppauge HVR-1850 for under $100 and so far (one 5 minute test) it has worked well. More data to come once I can test this some more.