Most boards carrying this UL mark (found in the OptiPlex 390/790/990 series) share these general characteristics:
Since E93839 is shared across different boards, follow these steps to find the exact updated documentation for your hardware: dell e93839 motherboard schematic updated
Identify your to get the exact manual. Find a wiring adapter for a standard PC case. Most boards carrying this UL mark (found in
Request in → “Schematic Requests” → Post: dell e93839 motherboard schematic updated
often host threads where users request and share specific board diagrams for older OptiPlex models. General Electronic Repair : Sites like Electro-Tech-Online