C27VV - LGA775 Intel Q45 DDR3 Mini Tower Motherboard for OptiPlex 780 MT

This motherboard is a direct replacement system board for the OptiPlex 780 Mini Tower platform that uses the C27VV board family. It features the Intel Q45 + ICH10DO chipset, LGA775 processor socket, four DDR3 DIMM slots, full-height expansion layout, and the exact MT rear I/O configuration shown in the photos, including parallel, serial, VGA, DisplayPort, eSATA, USB, Ethernet, and audio. The photos may show a CPU and memory installed for reference, but this listing is for the motherboard only and does not include the processor, heatsink, memory, or any other accessories.

Technical Specifications

• Part Number: C27VV
• DP/N Format: 0C27VV
• Board Label Format: CN-0C27VV
• Board Model / PCB Reference: GA0402
• Platform: OptiPlex 780 Mini Tower
• Socket Type: LGA775 / Socket T
• Chipset: Intel Q45 Express with ICH10DO
• Form Factor Class: Mini Tower system board / MT-specific full-height expansion layout
• Memory Type: DDR3 SDRAM non-ECC
• Memory Speed: 1066MHz
• Memory Slots: 4 x DIMM
• Maximum Memory: 16GB
• Supported Processor Families: Core 2 Quad, Core 2 Duo, Pentium Dual-Core, Celeron
• Integrated Graphics: Intel Graphics Media Accelerator X4500
• Network: Integrated Gigabit Ethernet
• Audio: Integrated high-definition audio
• Expansion Slots: 1 x full-height PCIe x16, 1 x full-height PCIe x1, 2 x full-height PCI
• Internal SATA Ports: 4
• Rear I/O Ports: 1 x parallel, 1 x serial, 1 x VGA, 1 x DisplayPort, 1 x eSATA, 1 x RJ45, 6 x USB 2.0, 2 x audio jacks
• Internal USB Header: 1 x 10-pin header supporting 2 USB ports
• Power Connectors: 24-pin ATX main power, 4-pin 12V CPU power
• CMOS Battery Type: CR2032

Interchangeable / Replacement Part Numbers

C27VV, 0C27VV, CN-0C27VV

✅ 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 780 Series: 780 Mini Tower, 780 MT
✔️ Supported Processor Families: Core 2 Quad, Core 2 Duo, Pentium Dual-Core, Celeron LGA775 processors supported by the OptiPlex 780 MT platform
✔️ Memory Compatibility: DDR3 non-ECC 1066MHz DIMMs, 1GB, 2GB, and 4GB module sizes, up to 16GB total across 4 slots
✔️ Expansion Layout: 1 full-height PCIe x16 graphics slot, 1 full-height PCIe x1 slot, 2 full-height PCI slots
✔️ Storage Connectivity: 4 internal SATA ports for compatible SATA hard drives, SSDs, and optical drives

☑️ Key Features

☑️ MT-specific LGA775 motherboard for the OptiPlex 780 Mini Tower platform
☑️ Intel Q45 + ICH10DO chipset with integrated Intel X4500 graphics
☑️ Four DDR3 DIMM slots supporting up to 16GB of non-ECC memory
☑️ Full rear I/O set including parallel, serial, VGA, DisplayPort, eSATA, USB, Ethernet, and audio
☑️ Full-height expansion support with PCIe x16, PCIe x1, and dual PCI slots
☑️ Strong replacement option for no-boot, no-display, bad-port, failed-chipset, and damaged-board repairs

⚙️ Fit Notes

• This listing is for the motherboard only.
• CPU, heatsink, thermal compound, memory, CMOS battery, I/O shield, cables, and add-in cards are not included.
• The installed CPU and memory shown in some photos are not part of the listing.
• This board is specific to the OptiPlex 780 Mini Tower layout and is not interchangeable with the Desktop, Small Form Factor, or Ultra Small Form Factor board layouts.
• Match the board by exact part number, slot arrangement, port layout, power connector locations, and SATA port count before ordering.
• The PCIe x16 slot is disabled when a display is connected to the integrated DisplayPort output, so display configuration should be planned accordingly.