By fan size and connector type. Keep in mind that Dell uses a specific fan
on some models to cool the CPU and you can't replace it with any old fan as
the BIOS won't recognize it and will halt the system.
--
----
Crosspost, do not multipost
http://www.blakjak.demon.co.uk/mul_crss.htm
How to ask a question
http://support.microsoft.com/kb/555375
_________________________________________________________________________________
"Swampy" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> When replacing cooling case or CPU fans, how does one match it up to his
> computer? I have a Dell Dimension 4550. How do I know it will fit
> because
> I want to upgrade the quality?
>
>