CMOS recovery jumper
The following illustration identifies the CMOS recovery jumper on the system
board.
CMOS jumper
(J8C2)
The CMOS recovery jumper can be used to clear CMOS memory in the event you
loose your user password. The above illustration shows the location of the CMOS
recovery jumper. See “Erasing a lost or forgotten password (clearing CMOS)” on
page 72 on how to use the CMOS jumper.
This jumper is also used to recover from a BIOS failure. See “Recovering from a
POST/BIOS update failure” on page 72.
Installing adapters-before you begin
Before you begin to install adapters in your computer, read the following
information:
v Read the handling guidelines in “Handling static-sensitive devices” on page 30,
and read the safety statements in “Safety Information” on page vii. These
guidelines will help you work safely with your computer and options.
v Back up all important data before you install or remove adapters.
v Make sure that you have an adequate number of properly grounded electrical
outlets for your computer, monitor, and other peripheral devices.
v Before accessing the inside of the computer, rotate the two front stabilizing feet a
quarter turn in towards the computer, so they do not break. Before placing the
computer in an upright position, rotate the two front feet a quarter turn outward
from the computer. See “Moving the stabilizing feet” on page 9.
v Have a small, flat-blade screwdriver available.
v For a list of supported options for your computer, refer to
http://www.ibm.com/pc/support on the World Wide Web.
System reliability considerations
To help ensure proper system cooling and system reliability, be certain of the
following:
v Each of the drive bays has a drive, or a filler panel and electromagnetic
compatibility (EMC) shield installed.
Chapter 5. Installing Options 29
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