Compaq/HP DS-SE2UP-AB silent Fan mod
Cool, now I've got a pretty decent power supply that's almost un-hearable.
Just get a silent 80mm fan (e.g. Arctic F8 Pro TC) and connect it to one of the
red and black wires that go to the DB-9 connector. The fan blows out so you
have to make sure that only the opposite side of the case is open to get good
airflow (I used shrinktube).
Unfortunately, the two holes at the backside do not fit for an 80mm fan, so
I used only one screw plus 2-component glue to secure the fan (I didnt't like
drilling because of the metal flakes ...).
See Post #1251 for instructions on howto make it run and more photos: