It's one of these: http://www.amazon.com/TiVo-TCD652160-Digital-Video-Recorder/dp/B000RZDBM2
I've added a new 1T hard drive to it about two years ago; holds a ton of recordings. Should be good for at least a few more years. If I sell it by Friday I can get you lifetime service for it (no subscription fees). I've used it with Comcast and Verizon; just need to get them to send you a cablecard.
Asking $125.
Thanks,
Daniel