E93839 Ga0402 Motherboard Specs Upd ((free)) | Dell

The Dell E93839 (GA0402) Go to product viewer dialog for this item.

is a motherboard designed for the Dell OptiPlex 780 series. It is built on the Intel Q45 Express chipset and features a Socket LGA 775 (also known as Socket T).

Below are the updated technical specifications for this motherboard: Core System Specifications Chipset: Intel Q45 Express with ICH10DO. Processor Socket: LGA 775 (supports FSB up to 1333 MHz). Form Factor: MicroATX (Proprietary Dell design). Processor Support

The board supports several Intel processor families from the Core 2 era: Core 2 Quad: Up to 1333 MHz FSB. Core 2 Duo: Up to 1333 MHz FSB. Pentium Dual-Core: Up to 1066 MHz FSB. Celeron: Up to 800 MHz FSB. Memory (RAM) Type: DDR3 SDRAM (Non-ECC only). Slots: 4 DIMM slots.

Speed: 1066 MHz or 1333 MHz (Note: often operates at 1066 MHz due to chipset limits).

Capacity: Supports 1GB, 2GB, or 4GB modules for a maximum of 16GB. Expansion & Storage PCI Express: 1x PCIe x16 slot (blue) and 1x PCIe x1 slot. Legacy PCI: 2x Standard PCI slots (32-bit). SATA: 4x SATA 3.0 Gb/s (SATA II) connectors. eSATA: 1x External SATA port on the rear I/O. Integrated Graphics & Audio

Graphics: Intel Graphics Media Accelerator X4500 (up to 256MB shared memory). Audio: ADI 1984A High Definition Audio. Network: Intel 82567 Gigabit LAN (10/100/1000 Mbps). Rear I/O Ports Dell OptiPlex 780 Service Manual--Mini Tower Computer dell e93839 ga0402 motherboard specs upd

The Dell E93839 (Model GA0402) Go to product viewer dialog for this item.

is a motherboard designed for the Dell OptiPlex 780 series, primarily used in the Mini Tower (MT) and Desktop (DT) form factors. It is built on the Intel Q45 Express chipset paired with the ICH10DO southbridge. Core Specifications

Socket Type: LGA 775 (Socket T), compatible with Intel Core 2 Quad, Core 2 Duo, Pentium Dual-Core, and Celeron processors. Chipset: Intel Q45 Express. Form Factor: Micro-ATX (approximately 9.6 x 9.6 inches). Memory: Slots: 4 DIMM slots. Type: DDR3 SDRAM (Non-ECC).

Maximum Capacity: Supports up to 16GB (4 x 4GB modules), though some sources list an 8GB limit depending on the specific chassis/BIOS version. Speed: 1066MHz or 1333MHz. Expansion and Storage Expansion Slots: 1 x PCI Express x16 slot for dedicated graphics. 1 x PCI Express x1 slot. 2 x PCI slots (Standard height in MT models). Storage Interfaces: 4 x SATA 3.0 Gb/s connectors. 1 x eSATA port (on rear I/O). Connectivity and Audio Rear I/O Ports: 6 x USB 2.0 ports. 1 x VGA and 1 x DisplayPort. 1 x Serial (RS-232) and 1 x Parallel (IEEE 1284) port. 1 x RJ-45 Ethernet port (Intel 82567LM Gigabit). Audio connectors: Audio-In and Audio-Out. Audio: Integrated ADI 1984A High Definition Audio. Networking: Integrated Intel 82567 Gigabit LAN. Shopping & Replacement

If you are looking to replace this board, it is widely available as a used or refurbished part under various Dell Part Numbers (DP/Ns) such as C27VV, OC27VV, or D517D.

Average Price: Typically ranges from $12 to $40 for used units on platforms like eBay. The Dell E93839 (GA0402) Go to product viewer

Compatibility Note: Ensure your power supply matches the proprietary Dell connectors, as some OptiPlex 780 variants use different power configurations.

Are you planning to upgrade the CPU or expand the RAM on this specific motherboard? Dell OptiPlex 780 Service Manual--Mini Tower Computer

The Dell E93839 GA0402 is a legacy workstation motherboard primarily found in the Dell OptiPlex 780 series. Built on the Intel Q45 Express chipset, it is a reliable but dated platform designed for business environments and casual computing.  Core Specifications 

Socket & CPU Support: Features an LGA 775 socket. It supports a range of older Intel processors, including Core 2 Quad, Core 2 Duo, Pentium Dual-Core, and Celeron models with a front-side bus (FSB) up to 1333 MHz.

Memory (RAM): Equipped with four DDR3 DIMM slots. While some sources list an 8GB limit, the platform is technically capable of supporting up to 16GB of non-ECC DDR3 memory (typically 1066MHz or 1333MHz) when used with a 64-bit operating system.

Chipset: Utilizes the Intel Q45 Express chipset with the ICH10DO I/O controller hub.  Expansion & Connectivity  SATA Ports: The H61 chipset provides:

Slots: Includes one PCI Express x16 slot for discrete graphics and typically two legacy PCI slots (depending on the specific chassis/form factor).

Storage: Features four SATA 3.0 Gb/s connectors for hard drives or SSDs. Rear I/O: 6 x USB 2.0 ports 1 x DisplayPort and 1 x VGA for video output 1 x eSATA port for external storage Gigabit Ethernet (RJ-45) and standard audio jacks Legacy Serial and Parallel ports  Reviewer Insights  Dell OptiPlex 780 Service Manual--Mini Tower Computer

Dell E93839 GA0402 Motherboard Specifications and Update Information

The Dell E93839 GA0402 motherboard is a component of various Dell systems, and its specifications can be crucial for users looking to upgrade or troubleshoot their computers. Below, you'll find an overview of the motherboard's specifications and guidance on how to update its components.

Storage Controllers

• SATA Ports: The H61 chipset provides:
  • 2x SATA 3.0 Gb/s (SATA II) ports.
  • 2x SATA 6.0 Gb/s (SATA III) ports (Usually colored white or blue on the board).
• RAID Support: Not supported on the H61 chipset/OptiPlex 390 platform.

2. Processor (CPU) Specifications

This motherboard uses the LGA 1155 socket type.

• Socket Type: LGA 1155 (Socket H2)
• Compatible Architectures: Intel 2nd Generation Core i3, i5, i7 (Sandy Bridge).
• Front Side Bus (FSB): 1333 / 1066 / 800 MHz (Integrated into DMI 2.0 interface).
• Notes on Compatibility: While the H61 chipset hardware is similar to that found in the OptiPlex 790, the BIOS on this board is specifically coded for the OptiPlex 390. Attempting to use 2nd Gen "Ivy Bridge" processors (e.g., i5-3470) may require a BIOS update or may not be fully supported depending on the revision.

Issue 2: No Display with 45nm Core 2 Quad

• Fix: Update BIOS to A11/A12 using a compatible 65nm chip (E6600) first.

Key Specifications

| Feature | Details | |-----------------------|---------| | Chipset | Intel Q87 Express (for OptiPlex 7020) or H81 (for 3020 variant – verify sticker) | | CPU Socket | LGA 1150 | | Supported CPUs | 4th Gen Intel Core (Haswell): i3, i5, i7, Pentium, Celeron | | RAM | 4 x DDR3 DIMM slots, up to 32GB, 1600MHz (non-ECC) | | Expansion Slots | 1 x PCIe x16, 1 x PCIe x4, 1 x PCIe x1, 1 x PCI (legacy) | | Storage | 4 x SATA 3.0 (6 Gbps) | | Rear I/O | PS/2 (keyboard/mouse), 4 x USB 3.0, 2 x USB 2.0, RJ-45, VGA, DisplayPort, audio jacks (line out, mic) | | Internal headers | Front USB 3.0, USB 2.0, audio, COM port (optional), chassis fan, CPU fan | | Power connector | 24-pin ATX + 4-pin CPU | | Network | Intel I217-LM Gigabit Ethernet | | Audio | Realtek ALC3220 (High Definition Audio) |

6. Rear I/O Ports (Integrated)

• PS/2: 2 (keyboard + mouse)
• VGA: 1 (D-Sub)
• DisplayPort: 1 (optional on some revisions)
• USB 2.0: 6-8 (typically 4 rear, 4 internal headers)
• USB 3.0: None (Q65 chipset lacks native USB 3.0 – add via PCIe card).
• Audio: 3 x 3.5mm jacks (Line-out, Line-in, Mic) – Realtek ALC269/ALC662.
• Ethernet: 1 x Gigabit (Intel 82579LM).
• Serial Port: 1 (DB9 male) – optional on header.

Storage

• SATA ports: 4–6 SATA III (6 Gb/s) ports (standard on Dell business motherboards)
• M.2: Likely absent on older GA0402; newer revisions may include single M.2 slot (check physical board)

Memory

• DIMM slots: 2–4 DDR3 or DDR4 slots depending on board revision (likely DDR3 for older GA0402 revisions).
• Supported capacity: 8–32 GB typical (per board/revision).
• Supported speeds: DDR3-1600 / DDR4-2133 (depends on actual revision).

Changes in BIOS A12 and A11:

• Added microcode for newer Core 2 Quad CPUs (Q9650, Q9550)
• Fixed fan speed control (earlier versions had fans at 100% constantly)
• Improved USB compatibility with 2TB external drives

Current Update Status: No official BIOS updates since 2010. Third-party modders have created “unlocked” BIOS versions that enable:

• Hidden memory timing settings
• Virtualization (VT-d) for older CPUs
• Support for Xeon LGA 775 adapters

Warning: Flashing a modded BIOS requires a hardware programmer (CH341A) for recovery. The Dell BIOS has signature checks.