The PowerMac G5 A1117 Quad Core computer utilizes a different style of power connector.  This 3D printed part allows you to build your own power connector for your computer.

This consist of the three printed components:

1 - Plug (with installed M2 heatsets and M2/10mm screws)

1 - Rear plate for round cables

1 - Rear plate for flat cables

An instructable has been created for this, and can be found here: http://www.instructables.com/id/Apple-Power-Mac-G5-Power-Connector/