: Dell provides high-quality PDF manuals for every system model. Use the Dell Support Manuals Portal and enter your specific PC model (e.g., " OptiPlex 7010 ") or Service Tag Motherboard Built-in Test (M-BIST)
A high-quality schematic of the Dell E93839 motherboard can help: Dell E93839 Motherboard Schematic High Quality
For users doing a "case swap" to a standard ATX case, the proprietary Dell front panel header is the most sought-after part of the schematic. Pin Number Pin Number Power LED + Power LED - Power Switch Power Switch No Connection Ground (Common) : Dell provides high-quality PDF manuals for every