The E93839 motherboard typically features the following configurations depending on the specific sub-model (e.g., GA0403 or KA0120): : Often the Intel Q45 Express (for OptiPlex 780) or (for OptiPlex 790). (older) or : 4x DDR3 DIMM slots, supporting up to 8GB or 16GB depending on the chipset. : Typically 1x PCIe x16 2x PCIe x1 3 to 4 SATA ports (3.0 Gb/s). Power Connectors : Standard 24-pin ATX main power and Troubleshooting Resources
– If your Dell computer is still assembled, the service tag provides access to official Dell documentation (user manuals, not schematics) at dell.com/support. dell e93839 motherboard schematic link