eATX Mainboard in Mac Pro 2008 Case?
eMac ATX conversion
PicoPSU Adaptor for Macintosh 128K / 512K / Plus from dekuNukem on
NEW Power supply Board FOR iMac 27 A1419 300W 2012 2013 2014 2015
Eric Bylenga :: Welcome
ATX PSU conversion Powermac G3
WaterMac - Apple Powermac G5 Case Modding - Watercooling
Imac G3/600 to ATX with green screen
This kit is the Mac Pro equivalent to our 'next generation' type kit for the G5 ATX Kit with PSU mount., Instructions download, Here are some link
Mac Pro ATX kit with PSU mount
Fixing an IMac G5 Power Supply Using an ATX (pc) PSU - Instructables
PowerMac G5 Case Modding Project - mATX & ATX Conversion