two upper 5¼" drive bays have one 80mm fan on each side. Each
fan has a plastic cage that holds it in place, no screws needed.
Some ventilation holes are present on each side panel to let
those fans breath. The problem is that when you install drives
in those bays they block almost all the space where air should
go through. You can see what I mean on the picture above. So
if you use those fan cages I recommend to let at least one of
the two drive bays empty to let air circulate, and those fans
should be used as exhausts.
don't know exactly who manufactures the power supply since it
is remarked with an Addtronics sticker. But you can see there
was another sticker there before. It features a ball bearing
thermal controlled variable speed 80mm fan. Basically this means
that the fan will usually run very quietly and will speed up
only when needed. The power supply is widely open on the bottom
to increase ventilation. It also features an on and off switch.
Here are its specifications.
INPUT(50-60Hz) 115V~/ 7A 230V~/ 4A
OUTPUT +5V/ 30A +12V/ 9A -5V/ 0.3A -12V/ 0.5A +5VSB/ 1A +3.3V/
& +3.3V Shall Not Exceed 180W Max Output Power: 300W
can get the case without a power supply or with a 250W, 300Wor
400W power supply.
lower section contain the system, the fourth external 5¼" drive
bay (does not have drive rails), and a track over the CPU, which
can accommodate a few different units. By default, these tracks
hold a rack, which can hold two hard drives. But if you buy
the case from Addtronics website, you can get an additional
rack which can hold 3 hard drives or a fan rack which was introduced
with the 6896 / 7896 models. This fan rack holds a 80mm fan,
which can be rotate to point right at the CPU. Overclockers
who require the lowest CPU temperature will appreciate this