The blue wire is the tachometer lead for motherboards that have this option. Not useing it will not hamper the fans performance.
Clint Worley
Worley Technology

-- Harvey Rose <[log in to unmask]> wrote:
I'm replacing a power supply fan in a Pentium AT computer it has a red and
black wire which I need to change the connector to the new one which has a
red, black & blue wire. Do I need to connect the blue wire somewhere - is
it a ground?

Harvey Rose
[log in to unmask]

         PCBUILD maintains hundreds of useful files for download
                     visit our download web page at:
                  http://freepctech.com/downloads.shtml


________________________________________________________________
The best thing to hit the Internet in years - Juno SpeedBand!
Surf the Web up to FIVE TIMES FASTER!
Only $14.95/ month - visit www.juno.com to sign up today!

                         PCBUILD's List Owners:
                      Bob Wright<[log in to unmask]>
                       Drew Dunn<[log in to unmask]>