Dell Optiplex 780 Schematic Diagram Access

Here is the hard truth:

The Dell OptiPlex 780 uses the with DDR3 memory (1066/1333MHz). The later OptiPlex 790 uses LGA1155 (Sandy Bridge). Their schematics are completely different and not interchangeable. Using a 790 schematic on a 780 will mislead you about pinouts for the PCH and CPU power management. dell optiplex 780 schematic diagram

If you are looking for specific pins or ports, the system board typically features: : Socket 775 (supports Intel Core 2 Quad/Duo). : Four 240-pin slots for DDR3 SDRAM (Max 16GB). : Two 7-pin SATA connectors. : 24-pin main power and 4-pin CPU power connectors. Diagnostic Indicators Here is the hard truth: The Dell OptiPlex