Dell bpcwcsn_5 User's Guide - Page 292

• A pair of matched memory modules installed in connectors DIMM1 and DIMM2 and another matched pair installed in connectors DIMM3 and DIMM4 Be sure to install a single memory module in DIMM1, the connector closest to the edge of the system board, before you install modules in the other connectors. Mini Tower, Desktop, and Small Form Factor Matched Pairs B A A matched pair of memory modules in connectors DIMM1 and DIMM2 (white securing clips) B matched pair of memory modules in connectors DIMM3 and DIMM4 (black securing clips). Addressing Memory With 4-GB or Greater Configurations (32-bit Operating Systems Only) This computer supports a maximum of 8 GB of memory. Current 32-bit operating systems, such as Microsoft® Windows® XP, can use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is less than that installed. Certain components within the computer require address space in the 4-GB range. Any address space reserved for these components cannot be used by computer memory. The following components require memory address space: • System ROM • APIC(s) • Integrated PCI devices, such as network connectors and SCSI controllers • PCI cards • Graphics card(s) • PCI Express cards (if applicable) 292 Memory