Info on their site is a bit misleading. It appears it supports just Mini-ITX mobos and standard ATX power supplies. Specs and photos: http://www.x2products.com/computer-cases/trajan-x2-a902b-cer-u3/specs/ Rear side, showing that PCI-E riser is used: http://www.x2products.com/kms/images/uploads/x2products_computer_cases_trajan_x2-a902b-cer-u3_10131418917550.jpg It's just slightly larger than Silverstone Raven RVZ01 and Fortress FTZ01.

looks very similar to the Azza Z CSAZ-103 Mini-ITX Gaming Case from Amazon