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Sounds like someone put a IIe to IIgs upgrade board in there.

I wonder if this is just something Apple did if you had the machine in for service and it needed a swap?

Apple dealers sold the fan as an optional upgrade. I believe Apple instructed them to install it whenever customers had over a certain number of cards installed General consensus was that it didn't actually accomplish much as it wasn't positioned in a way that encouraged air to enter/leave the case

Third party fans that sat between the monitor and computer worked much better (as they pulled air up through the vents on the top of the case, thus also drawing air into the case through other openings.)

Indeed, clearly this will do nothing more than just move air around inside the case. So do you think this is an actual Apple part? I'm amazed to not have been able to find any photos of a fan that looks like this. Oh also, it's also really noisy!

Apple built a ton of motherboards with the keyboard/power connectors installed to be sold in upgrade kits. But the upgrade kit cost nearly as much as an entire IIGS so basically nobody bought them. Eventually all those boards were sent to the factory to be put into new IIGSes.

So the early IIGSes that came from the factory didn't have the connectors, but then a lot of the later ROM 01 machines (so '88 or early '89) did have the connectors, after Apple gave up on the upgrade program and used up that stock of boards before the factories switched to making ROM 3 machines.

And most of the replacement boards sent to dealers for repair were the upgrade boards as well. They already had them boxed up and ready to ship, after all.

And for my ten-thousanth reply to this note; madelyn.sh/tools/apple2...

Matches the PSU which says 8701 on it.

My IIgs is exceptionally rare… from 1981! I also believe everything I read in the papers.

And yes, I get the joke, mr " I put a mac serial number in there". :D

All those random comments aside: I've never personally seen a ROM 01 machine that didn't have the connectors. I would guess that a) power supply is older and was swapped in from another machine and b) the board is just a spare from the IIe upgrade period that was used to fill orders.

I have about 5 or 6 of the ROM 00/01 boards/machines and none have the connectors installed, only the footprint. Similar results for a Google image search, only footprints... Strange it's all you've ever seen!

This isn't a warranty replacement, but a board from a kit used to convert an IIe to an IIGS. It may have later been reinstalled in a standard IIGS case (hence the original power supply). If you're interested, you can check the ROM version when booting (ROM 01, judging by the age).

Some others have suggested that when no one bought the IIe upgrade kit boards, Apple started using them as warranty replacement and even in newly manufactured IIgs machines until the ROM 03 board revision came out.

That's an incredibly sensible conclusion, but as it's late 80's Apple you can't really use sense to guess their activities.