I also have a 44p-170, please let me know if you figure out how to put the bloody side back on. It keeps falling off on mine.
Hopefully they send the hard drive bracket with yours. I did not get one with mine so I just stuck in the second 5.25" bay.

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They sent me the bracket and two sets of screws with it. Its a very nice machine, just takes forever to start up, but at least the IBM startup chime is pretty cool (yes, it has one). My POWER GXT3000P video card comes tomorrow, and hopefully my AIX 5.2/5.3 media. (I'm using 5.1 right now)