Recently this boxed example of an XtremeMac U.F.O. came up for sale, and I had to jump on it. This was a really neat accessory I've always been a fan of. It was made specifically for the iMac G4, and it provides front-facing USB and FireWire ports, cable management, and a super cool blue "glow" lighting effect around the base.

Seen below with my 20":



It's a bit fiddly to set up but having the front-facing ports is super handy once you do. Plus the lighting just looks cool!

One thing that I unfortunately *didn't* get with this was the user's guide. So if you are in possession of this, please consider scanning it and uploading it online!

I've documented this accessory more extensively at: https://www.mac27.net/xtrememac-ufo