original iMac.
Its the power connector. It looks similar to an ATX
connector, but it is smaller and has more pins.
Google of 'imac power connector' turns up a lot of hits.
Yes, many many hits, alas none that say what the connector is. They are
all how to hack in an ATX power supply, but they all expect you to have a
connector you can salvage from a dead iMac... I lack that part. So I'm
trying to track down what this thing is called, so I can buy a
replacement.
-chris
<http://www.mythtech.net>