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7. If you are removing the card permanently, install a metal filler bracket over the empty expansion slot opening and close the expansion-card latch.



8. Install the cover. See "Replacing the Cover" in "Troubleshooting Your System."



9. Stand the system upright.



10. Install the bezel. See "Installing the Bezel" in "Troubleshooting Your System."



11. Reconnect the system to its electrical outlet and turn the system on, including any attached peripherals.

System Memory

You can upgrade your system memory to a maximum of 4 GB by installing combinations of 256-MB, 512-MB, or 1-GB 2-way unbuffered ECC DDR 2 400/533

memory modules. The system memory is located on the system board adjacent to the power supply bays. See FigureA-3. The memory module sockets are

arranged in two banks on two channels (A and B). The memory module banks are identified as follows:

l Bank 1: DIMM1_A and DIMM1_B

l Bank 2: DIMM2_A and DIMM2_B



General Memory Module Installation Guidelines

l If only one memory module is installed, it must be installed in socket DIMM1_A.

l If two or more memory modules are installed, they must be installed in pairs of matched memory size, speed, and technology.

Table6-1 shows examples of different memory configurations.

Table 6-1. Sample Memory Configurations



Installing Memory Modules



1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.



2. Remove the bezel. See "Removing the Bezel" in "Troubleshooting Your System."



3. Lay the system on its right side.



4. Remove the cover. See "Removing the Cover" in "Troubleshooting Your System."



5. Remove the cooling shroud. See "Removing the Cooling Shroud."



6. Locate the memory module sockets. See FigureA-3.



7. Press the ejectors on the memory module socket down and out, as shown in Figure6-8, to allow the memory module to be inserted into the socket.



Total Memory



DIMM1_A



DIMM2_A



DIMM1_B



DIMM2_B



Memory Mode

256 MB

none

Single channel

512 MB

256 MB

none

256 MB

none

Dual channel, interleaved

512 MB

none

Single channel

1 GB

256 MB

Dual channel, interleaved

1 GB

512 MB

none

512 MB

none

Dual channel, interleaved

1 GB

none

Single channel

1.5 GB

512 MB

256 MB

512 MB

256 MB

Dual channel, interleaved

2 GB

512 MB

Dual channel, interleaved

2 GB

1 GB

none

1 GB

none

Dual channel, interleaved

3 GB

1 GB

512 MB

1 GB

512 MB

Dual channel, interleaved

4 GB

1 GB

Dual channel, interleaved

CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting

against electrostatic discharge.

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