D517D - LGA775 DDR2 Desktop Motherboard System Board for OptiPlex 760 DT

Replacement motherboard / system board for OptiPlex 760 Desktop systems that use the DT form factor chassis. This board uses the LGA775 processor socket and DDR2 memory, and provides the same general port layout and onboard connector arrangement associated with interchangeable board revisions D517D, R230R, and M859N. Ideal for repairing a failed system board while retaining the original chassis, front panel connections, and standard desktop I/O configuration.

Technical Specifications

• Part Number: D517D
• Board Type: Desktop motherboard / system board
• Socket Type: LGA775
• Memory Type: DDR2 SDRAM
• DIMM Slots: 4
• Expansion Slots:
• 1 x PCIe x16
• 1 x PCIe x1
• 2 x PCI
• Storage Connectors:
• 2 x SATA
• 1 x IDE / PATA
• Rear I/O Ports:
• 1 x Parallel
• 1 x Serial
• 1 x VGA
• 1 x DisplayPort
• 1 x eSATA
• 6 x USB 2.0
• 1 x RJ-45 Ethernet
• 2 x 3.5mm audio jacks
• Form Factor Compatibility: Desktop / DT form factor only
• Compatible System Family: OptiPlex 760 DT

Interchangeable PNs

D517D, 0D517D, R230R, 0R230R, M859N, 0M859N

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your system's specific configuration. It's essential to verify compatibility with your system or enclosure manufacturer prior to installation.

✔️ OptiPlex 760 Desktop (DT): D517D, R230R, M859N system board variants with matching rear I/O layout and internal connector configuration

☑️ Key Features

☑️ Direct replacement motherboard for OptiPlex 760 Desktop / DT systems
☑️ Supports LGA775 processors used in the OptiPlex 760 desktop platform
☑️ Four DDR2 DIMM slots for memory installation and upgrade support
☑️ Includes standard onboard expansion with PCIe x16, PCIe x1, and PCI slots
☑️ Provides legacy and business-class connectivity including VGA, parallel, USB, LAN, and audio
☑️ Interchangeable with multiple verified board revisions that share the same DT chassis fit and connector layout
☑️ Ideal for restoring a non-booting or damaged desktop system

⚙️ Fit Notes

• This motherboard is for the OptiPlex 760 Desktop / DT form factor only and is not compatible with Small Form Factor (SFF), Mini Tower (MT), or Ultra Small Form Factor (USFF) versions.
• Please match your existing part number and rear I/O layout before ordering.
• CPU, heatsink, memory, and CMOS battery may need to be transferred from your original board unless included separately.
• Fresh thermal compound is recommended when reinstalling the processor and heatsink, such as Shin-Etsu G751.