Connecting Hardware Devices Memory modules 66Memory modulesThe server contains four memory module slots. You can install one registered SDRAMDual In-line Memory Module (DIMM) with Error-Correcting Control (ECC) in each slot,allowing you to expand system memory to a maximum of 4 GB—modules are available in128 MB, 256 MB, 512 MB and 1 GB capacities. See the table below for valid modulecombinations.In some cases, a memory module cannot be replaced because of a lack of clearancewith a possible optional card installed in the PCI-1 slot. In such cases, it is necessary toremove the option card before replacing or adding a memory module.No Slot 1 Slot 2 Slot 3 Slot 4 Total Capacity1 1024 1024 1024 1024 40962 512 1024 1024 1024 35843 1024 1024 1024 - 30724 512 512 512 1024 25605 512 1024 1024 - 25606 512 512 512 512 20487 512 512 1024 - 20488 1024 1024 - - 20489 256 256 256 1024 179210 256 256 512 512 153611 256 256 1024 - 153612 512 512 512 - 153613 512 1024 - - 153614 128 128 128 1024 140815 256 256 256 512 128016 128 128 1024 - 128017 256 1024 - - 128018 128 512 512 - 115219 128 1042 - - 115220 256 256 256 256 102421 256 256 512 - 102422 512 512 - - 102423 1024 - - - 102424 128 128 128 512 89625 128 128 256 256 76826 128 128 512 - 76827 256 256 256 - 76828 256 512 - - 76829 128 128 128 256 64030 128 256 256 - 64031 128 512 - - 64032 128 128 128 128 51233 128 128 256 - 51234 256 256 - - 51235 512 - - - 51236 128 128 128 - 38437 128 256 - - 38438 256 - - - 25639 128 128 - - 25640 128 - - - 128
