Apple Mac-based servers... Kind of a rare beast, not many of 'em were made I don't think. I think they were an early 2000s thing, if I'm not mistaken. Not very successful, probably due to the unhappy combination of Apple's staunchly closed-box approach to computing hardware, lack of demand and support and the HUGE pre-existing base of x86, POWER and Sparc machines, most notably those from IBM, Dell, HP, Sun, DEC and Compaq (the last two were still separate independent companies at that time). Price was likely to have been a contributing factor as well. Very neat photo.