The mobo is connected to the PS with either one or two connectors.
- Older std is two connector system. They were NOT keyed, so you could connect the plugs wrong, or backward, and damage the mobo.
- Single Power Connector is the new std are keyed. You can't insert them incorrectly (unless you use a hammer). The above image shows a single power connector on a mobo (the white plastic keyed slots).
