Xi3’s modular PC, the Piston—which some may remember as the original “Steam Box” announcement—will be available on November 29th.

"We were asked to build a product specifically for Valve," says Xi3 founder and CEO, Jason A. Sullivan.

Xi3 Chief Marketing Officer, David Politis, explains how Piston hardware upgrades will be possible and the possibility of third-party upgrades for the device.

But you'll be able to install Linux or Android to the device if you want, and run any X86-based application on it, says ...