Specifications

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8. Replace the computer cover.
9. If you installed a DIMM with ECC memory, start the computer and use the ECC
Configuration feature in Setup to enable the use of ECC.
Removing Memory
To remove a DIMM, follow these steps:
1. Gently spread the retaining clips at each end of the socket. The DIMM pops out of
the socket.
2. Hold the DIMM by the edges, lift it away from the socket, and store it in an anti-static
package.
3. Reinstall and reconnect any parts you removed or disconnected to reach the DIMM
sockets.
Battery Replacement
When your computer is turned off, a lithium battery keeps the time-of-day clock and the
values in CMOS RAM current.
The battery should last about seven years. When the battery begins to die, it loses
voltage; when the voltage drops below a certain level, the Setup program settings
stored in CMOS RAM (for example, the date and time) might not be accurate. Replace
the battery with an equivalent one.
If your local ordinances permit, you may dispose of individual batteries as normal trash.
Do not expose batteries to excessive heat or fire. Keep all batteries away from children.
CAUTION
Danger of explosion if the battery is incorrectly replaced. Replace only with the same or
equivalent type recommended by the equipment manufacturer. Discard used batteries
according to manufacturer’s instructions.
Expansion Card Installation
The computer system should be switched off and the power cord removed before
installing any expansion cards into the system. Failure to do so may cause severe
damage to both your motherboard and expansion cards.
Before installing an expansion card, read it’s documentation regarding any hardware or
software settings that may be required to set up your specific card.
• Set any necessary jumpers on the expansion card.