Hi everyone I picked up this Performa 475 and its strange to say the least. For starters it has a ROM slot, CUDA reset switch, and "PRIMUS" by the board serial number. This was made four months before the October release of these machines. I believe this was a machine Apple probably sent out to repair centers to familiarize themselves with the machines before public release. Also note the incredibly strange case. Pictures below, any ideas or information is greatly appreciated.