<<I see you know about power supplies Peter. Can you or anyone please recall 
or suggest a simple way to connect a fan that will run at 12v or lower... to 
my 7300 or 7600 as I am setting up a hot drive in one and want to add an extra 
fan. One PC fan I have is nice and thin and about right and has a small 
reddish brown connector, 3 holes, 2 (red wire) of which are jumpered together. 
It 
looks like a plug that will fit on the little 3-pin job called Geoport to the 
left front of a 7300 (whatever this is?). Must I tap a power (4-pin red, black, 
black, blue) power set that goes to my drives and be rid of the 3-pin plug. If 
I have to tap, I assume I tap the red, but what other to be safe? Is there a 
more elegant solution, a supply on the mb?>>

Fans!
http://www.geocities.com/glenstrek/7500_fan.html

Be sure to click on the "Cooling fan PDF" link

The other and perhaps more effective approach (learned from posts from Peter) 
is to install a higher capacity fan in the power supply. --glen (digest mode)

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