Advantech PCA-6176 Series, User Manual, Page: 30 / 128

18 PCA-6176 User's Manual
1.12 Mounting the CPU and Cooling Modules
The Pentium
®
II/III is a module-type CPU which runs at high speeds,
for example 450 MHz, so the cooling mechanism becomes critical for
system reliability. There are two types of cooling systems. One has a
cooling fan attached to the heat sink of the Pentium
II/III module. The
other has a huge heat sink without any cooling fan attached. The first
of these systems is recommended.
Both cooling systems for the Pentium II/III require a "retention
module" to firmly fix the Pentium
II/III CPU to slot 1.
Installing a Pentium II CPU with cooling modules requires an SECC I
(single-edge contact connection I) system. Figure 1-4 illustrates the
steps involved in mounting the retention module.
Installing a Pentium III CPU with cooling modules requires an SECC
II (single-edge contact connection II) system. Figures 1-5 and 1-6
illustrate the steps involved in mounting the retention module.
Figure 1-4: SECC I CPU installation