HP Brio 8172, Online Manual

Page: 12 / 86

12
1 About Your Hardware
A Quick Look Inside Your Computer
Expansion Card Slots
There are five expansion card slots on the backplane for the installation of:
• Two 32-bit PCI cards and three 16-bit ISA cards,
or
• Three 32-bit PCI cards and two 16-bit ISA cards.
System Board Configuration Jumpers
Microprocessor
Configuration
Jumper (JP5)
This jumper allows the system board to be set so that it matches the speed of the installed processor. You only need to
change the microprocessor configuration jumper if you install a new processor that has a different processor speed to the
one that is currently installed.
Refer to “Upgrading a Processor” on page 45 for more information about installing a processor upgrade, and changing the
jumper settings.
CPU Voltage
Jumper (JP4)
Use this jumper to change the output of the on-board switching voltage regulator for different processors. Refer to
“Upgrading a Processor” on page 45 for more information about installing a processor upgrade, and changing the jumper
settings.
CMOS Jumper
The CMOS memory stores information, such as your computer’s configuration, which is preserved when you turn off your
computer. A jumper placed on pins 1-2 prevents changes to the CMOS configuration. This is the default setting. Refer to
“Clearing the CMOS Configuration” on page 31 for information about clearing the CMOS and using this jumper.
Note
PCI expansion card slots are generally white plastic grooves.
ISA expansion card slots are generally black plastic grooves lined with silver.