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NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain Federal Communications Commission (FCC) certification of the system. The brackets also keep dust and dirt out of your computer.

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NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up:

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See Chapter 2, “Using the System Setup Program,” for instructions.

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

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Memory can be increased to a maximum of 256 megabytes (MB) by installing combi- nations of 32-, 64-, or 128-MB dual in-line memory modules (DIMMs) in the two DIMM sockets on the system board. Figure 6-6 shows the DIMMs and DIMM sock- ets. Your system can support nonparity synchronous dynamic random-access memory (SDRAM) DIMMs. DIMM speed (66 MHz or 100 MHz) should match the external bus speed of the microprocessor.

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Using a mixture of 66-MHz and 100-MHz DIMMs on a system that has an external bus speed of 100 MHz￿generates the following error message:

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Installing System Board Options 6-7