Removing and Installing Parts 73NOTE: Memory purchased from Dell is covered under your computer warranty.NOTICE: If you remove your original memory modules from the computer during a memory upgrade,keep them separate from any new modules that you may have, even if you purchased the new modulesfrom Dell. If possible, do not pair an original memory module with a new memory module. Otherwise, yourcomputer may not start properly. You should install your original memory modules in pairs either inconnectors DIMM_1 and DIMM_2 or connectors DIMM_3 and DIMM_4.Addressing Memory With 4-GB ConfigurationsYour computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Currentoperating systems, such as Microsoft® Windows® XP, can only use a maximum of 4 GB of addressspace; however, the amount of memory available to the operating system is less than 4 GB. Certaincomponents within the computer require address space in the 4-GB range. Any address spacereserved for these components cannot be used by computer memory.Channel A: matched pair of memorymodules in connectors DIMM_1and DIMM_2 (white securing clips)Channel B: matched pair of memorymodules in connectors DIMM_3and DIMM_4 (black securing clips)
