http://linuxtv.org/wiki/index.php/Main_Page is where you can find TV devices compatible with linux. Currently, it doesn't look like that device is compatible. There has been some work with the HDHomerun Prime and linux, but I'm not sure how much is currently working, as I haven't looked at it in months. Last time I checked, it was working somewhat with MythTV, but there were some issues getting all three tuners to work, and cablecard support was spotty.