I wondered about that, but when I looked at the Hauppauge web page for that device, it showed that the device is connected via a USB cable.I had a idea last night that it is possible that the cable card you got from your cable company may act as a set top box,
If the device were a set-top box, I think that it would be connected to the TV via an HDMI, SCART, SVHS, component, or composite cable. On the PC you would need an HDMI input socket, or an analog-to-digital converter for the others (since they are all analog).
-- from CyberSimian in the UK