Ha! You just saved me a trip to the store. I have been having problems with the print server in my Brother Laser printer so I was just going to plug the USB into my airport extreme, but I've already got a HD plugged in there for Time Machine backups. I was getting ready to head out to pick up a USB hub when I saw your post. I have an old Apple KB that suffered a spill and now half the keys don't work. I figured I'd try to see if it would work as a USB hub with the extreme, and it works great. Not the prettiest or smallest hub, but it will hold until I can get one cheap.