Four-pole for 5 and 12 volts. Disk drive power connector on the right next to the ribbon cable.

Power supplies are fitted with at least five plugs for delivering power to the drives. If you need more than this, consider buying one or more splitter cables. A splitter cable provides two connectors from a single one. The corners of the plugs and sockets are keyed to ensure correct polarity.

Floppy drives have smaller plugs, which are easily recognized among the cables coming from the power supply. Finally, there is the large ATX plug that plugs into the power socket on the motherboard. ATX12 or P6 should be connected where required. The latter provides extra power for power-hungry processors, as you already learned in Part 1 .