Cheers Ron.
I've seen all the mods but they do not answer my more techie requirement.
The fan in an xbox is a 6v fan - all the quiet 80mm fans out there are 12v
All the mods talk about undervoltage running the 12v fan by running it from the motherboard direct
or simply having the fan run all the time by having it wired to the 12v line.
I want something a little more clever - I want to run the 12v fan from the 12v supply but control it with the 6v motherboard.
I'm assuming that the motherbord outputs a varying voltage to better control the fan - say 3v to 6v
and I want to convert that to have a voltage over the fan of 6v to 12v
Hmm, I wonder, is the fan either on or off - if so, a simple relay would do what I want - anyone answer these questions?
If it was as easy as sticking a relay in the circuit I would have thought somone would have done that by now - so I'm thinking that the motherboard varies the fan speed by changing the voltage