IBM 88554RU Installation Guide - Page 71
Memory, Description, Part number, Max installable, Port 1 DIMM slots
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Center plane 3 4 1 2 Side of chassis Figure 3-1 Processor installation order 3.1.2 Memory A maximum of 28 DIMMs may be installed in the memory-board assembly of the x455, depending on the size of the DIMMs used. Supported DIMMs are listed in Table 3-2. Table 3-2 Supported DIMMs Size Description 512 MB PC2100 CL2.5 ECC DDR SDRAM 1 GB PC2100 CL2.5 ECC DDR SDRAM 2 GB PC2100 CL2.5 ECC DDR SDRAM Part number 33L5038 33L5039 33L5040 Max installable 28 28 28 Go to the ServerProven site for the latest information on supported memory modules: http://www.pc.ibm.com/us/compat/machines/x455.html When installing memory DIMMs, they must be installed in matched pairs (size and technology), in the order shown in Table 3-3. Table 3-3 DIMM order Pair Port 1 DIMM slots 1 1 and 14 3 2 and 13 5 3 and 12 Pair Port 2 DIMM slots 2 15 and 28 4 16 and 27 6 17 and 26 Chapter 3. Planning 57
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