Apple powermac server g3 minitow Servicehandbuch
Basics
Fan Installation - 89
Fan Installation
One or two auxiliary fans may be installed in the baffle
handle. Third-party PCI card manufacturers may suggest
these fans be installed based on the thermal characteristics
of their cards.
Two sets of four fan screw posts indicate where you can
install these fans. Fans must be positioned so they pull air
into the computer, not push air out. Be sure the screws don’t
extend down into the space where PCI cards or cables may be
present.