Pros: built like a tank, short chassis length, weighs a ton

Cons: I selected this because it is for shallow depth racks (17.5") nd comes with rails for 4pt mounting BUT railes are for 25.5"++ racks so they are useless for the application the chassis was designed for. Short rails are OPTIONAL (read: more $$). Also the fan cables are extreely short and there are four of them, most general MB's don't have this many fan ports. Also the front panel connector is not useful out-of-the-box. I suppose there is another optional breakout cable too, but seriously...

Overall Review: Good chassis if you are already deaf (or want to be), like to spend lots of money on options, and only want to use the supermicro board it was designed to work with (in which case you are probably better off buying a system not a chassis). This is a bad choice if you are looking for a small footprint general purpose rack chassis.

Pros: quiet, rack rails, inexpensive, BUT --> read the cons and comments before you waste your $$

Cons: I3 only, ECC only, BIOS does not properly report ECC so memtest86+ will not test as ecc.

Overall Review: I have four of these machines, one returned for failure (dead after three months) and another one is dying -- 50% in less than a year. Random errors, segfaulting in random places. First thhought it was memory (memtest spewed a bazillion errors). Changed memory from 2x4GB Kingston 1333 ECC 9/9/9/24 to 2x4GB Corsair 1066 7/7/7/20 (all my local guys had for ECC). Memory errors went away -- probably because of the lower speed -- but OS still segfaults and corrupts disk (Gentoo 3.4.9, 64bit multilib). It's the server for sure (confirmed not the disk -- tried two, they work perfectly in other faster machines) not the cpu, not the memory. These servers are flaky and the ECC/BIOS problem has been posted elsewhere. Apparently ASUS coulnd't care less about this problem. I regret buying these, for sure...