SGI Crimson Questions & hardware request...

Hi all -- Just picked up an SGI Crimson this afternoon, which should prove to be a fun machine to play around with once I get it running... a few questions for those who've dealt with these before... - What kind of power cable does this thing take? I've not yet seen anything like the connector on the back of this thing... can I plug this thing into a regular household outlet (that can supply the massive power requirements) or am I going to have to rewire my house? :) - What version of IRIX do you recommend running? I have a copy of 5.3, and 6.5, but I know that 6.5's too new for this beast. Anyone out there have a keyboard/mouse they're willing to part with (or know where I can find one?). This thing's got a 15-pin D-Sub connector on it and I of course don't have anything compatible... Thanks, as always... - Josh