Xi3 says it made PISTON PC for Valve; will ship with a Windows OS

Valve no longer involved with Xi3 PISTON gaming PC

Xi3 shows off customizable interface for PISTON gaming PC

Xi3 taking pre-orders for PISTON small console-like PC for late 2013 ship date

Steam Box PC maker Xi3 reveals super-small Z3RO Pro Computer

Valve invests in Xi3 PC maker; will make Steam Big Picture PC