Yep, works great in 10.4.11/10.5.2, WinXP. Nothing extra needed.
However, I can't select a darn thing from GRUB at boot. In fact, even holding Option throughout the boot process yields no results. F2 or Fn+F2 doesn't select BIOS on my Intel D945PSN mobo, either.
Until the (any) OS boots, no dice.
I found a post RE: Mac Pro and BootCamp with this issue. The solution was to plug it directly into the USB on the mobo, reboot twice, and tada. No such luck here (as I thought).
Yes, and I also updated the firmware on the keyboard.
Any ideas?