The HDHomeRun Prime is a remote tuner, you connect it to your cable and your network and the tuners are then available for Windows 7 Windows Media Center PCs on the network to use for watching live TV or recording. You can get the full product details from the SiliconDust website. Today the HDHomeRun Prime officially requires a Windows 7 Windows Media Center PC, but I did just talk to SiliconDust at The Cable Show this week. They’re working on adding DLNA/DTCP-IP support which would allow any DLNA/DTCP-IP-enabled device to access the tuners over the network. I’ll get around to writing a post on that.

It is a simple device. There is a coax connection for the cable, a slot for the M-Card CableCARD, Ethernet for the network, USB to support a Tuning Adapter if required, and a power connection. The $129.99 price is lower than Amazon’s $149.99 new price, and nearly half off the full $249.99 MSRP.

MissingRemote reports that the Hauppauge WinTV-DCR-2650 dual-tuner USB CableCARD box has passed CableLabs certification and will sell for just $129. Pre-orders start Monday, and it will ship in late June.

Also shipping in late June, the SiliconDust HD HomeRun PRIME will come in two models. The HDHR3-CC is a three tuner box selling for $249.99, while the HDHR3-6CC-3X2 is a six tuner box selling for $499.99. Both are available for pre-order now.

Still a bit more nebulous Ceton Corp, which recently finally shipped their much anticipated InfiniTV 4 internal quad-tuner CableCARD card, also announced a InfiniTV 4 USB model back at CES. Given that they’ve finally started shipping the internal model, and the competition is about to ship their USB tuners, I have to expect this will see the light of day sometime soon.

Just in time to take advantage of the newly updated tuning adapters. I’m sure PC-based DVR enthusiasts will line up for these products if they deliver on their promises.