My 2006 Mac Pro 1.1 to ATX Mod (more pics and info in comments) : r/sleeperbattlestations
Mac Pro 2006-2008 (First Generation) Repair (2006, 2007, 2008) - iFixit
APPLE MAC PRO 2006 1,1 A1189 2-CORE 2x 2.66 GHz HD2600XT 12GB RAM 1TB OS El Cap. | eBay
Mac Pro | Original | Quad Core 2.0 GHz - Techable.com
Can you use the 2006 Mac Pro in 2020? | Episode 1 - YouTube
I got a 2006 Mac Pro (is it too old?) - YouTube
Inside the Mac Pro - Apple's Mac Pro - A True PowerMac Successor
Mac Pro | Original | Quad Core 2.0 GHz - Techable.com
Apple Mac Pro A1186 (2006) 2x Xeon 5150 2.66GHz 4GB RAM 4x500GB HDD 7300GT No OS | eBay
Mac Pro (Mid 2006) | Low End Mac
16GB Memory Upgrade for 2006-2007 Mac Pro Tower
Apple's Mac Pro case, same as the old case (almost) | Engadget
922-8000 Apple Case Enclosure for Mac Pro First Generation-2006
Filmmiker on Twitter: "Visually, the original Mac Pro suits @Apple's current design principles more than the latest Mac Pro. Fight me. https://t.co/ARZXrWqJVP" / Twitter
Mac Pro unveiled | MacHappy
Mac Pro | all about Steve Jobs.com
Apple Mac Pro (Tower, Mid 2006) 2.66 GHz 2 x 2-Core Xeon 5150 MA356LL/A - Specifications - SellYourMac.com