Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your SOYO X99 Gaming Motherboard Kit. This kit is designed for desktop computers, featuring an X99 motherboard, an Intel Xeon E5 2680 V3 CPU, and DDR4 16GB (2*8GB) 2133MHz memory. It supports NVME, PCIe 3.0, and TPM 2.0, offering a robust platform for various computing needs including gaming, audio/video editing, office tasks, video rendering, and MaxCompute applications.

Setup and Installation
Before beginning installation, ensure your workspace is clean and static-free. It is recommended to wear an anti-static wrist strap to prevent damage to components.
1. Motherboard Installation
- Install the I/O shield into your computer case.
- Carefully align the motherboard with the standoffs in your case and secure it with screws.
- Connect the 24-pin ATX main power connector and the 8-pin ATX12V power connector from your power supply to the motherboard.

2. CPU Installation (Intel Xeon E5 2680 V3)
- Open the CPU socket retention arm and cover.
- Carefully place the Intel Xeon E5 2680 V3 CPU into the LGA 2011-3 socket, ensuring the gold triangle on the CPU aligns with the triangle on the socket.
- Close the socket cover and secure the retention arm.
- Apply a thin, even layer of thermal paste to the top of the CPU.
- Install the CPU cooler according to its manufacturer's instructions, ensuring it is securely mounted and the fan is connected to the CPU_FAN header on the motherboard.

3. Memory (RAM) Installation
- The motherboard supports DDR4 memory. For optimal performance, install memory modules in the black main slots first. Inserting into gray slots without populating black slots may not work.
- Ensure all memory modules have unified specifications (e.g., same capacity, speed, and timing) for stable operation. Mixing different specifications is not recommended.
- Open the clips at both ends of the DIMM slot.
- Align the notch on the memory module with the key in the DIMM slot.
- Press down firmly on both ends of the memory module until the clips snap into place.

4. Storage Device Installation
- SATA Drives: Connect SATA data cables from your storage drives (HDDs/SSDs) to the SATA 2.0 ports on the motherboard. Connect SATA power cables from your power supply to the drives.
- M.2 SSDs: This motherboard features NVME M.2, NGFF M.2, and WIFI M.2 slots.
- Locate the desired M.2 slot.
- Insert the M.2 SSD into the slot at an angle.
- Push down the SSD and secure it with the provided screw.

5. Expansion Card Installation
- PCIe x16 Graphics Card: Insert your graphics card into the PCI Express x16 slot. Ensure it is seated firmly and secured with a screw to the case. Connect any necessary PCIe power cables from your power supply to the graphics card.
- Other PCIe Cards: Install other expansion cards (e.g., sound cards, network cards) into the available PCI Express x4 or PCI slots.
6. Front Panel Connections
Connect the front panel cables from your computer case (power button, reset button, HDD LED, power LED, front USB, front audio) to the corresponding headers on the motherboard. Refer to Figure 2 for header locations.
- F_AUDIO: Connect front audio panel.
- F_PANEL: Connect power switch, reset switch, power LED, HDD LED.
- F_SPEAKER: Connect system speaker.
- USB 2.0 Headers: Connect front USB 2.0 ports.
Operating Instructions
1. Initial Power On
- After all components are installed and connected, ensure all power cables are securely plugged in.
- Connect your monitor, keyboard, and mouse to the appropriate ports on the rear I/O panel.
- Press the power button on your computer case.
2. BIOS/UEFI Setup
Upon initial boot, you may need to enter the BIOS/UEFI setup to configure settings such as boot order, date/time, and enable specific features (e.g., XMP for RAM, NVMe support). Typically, you can access BIOS by pressing the DEL or F2 key during startup.
3. Operating System Installation
Insert your operating system installation media (USB drive or DVD) and follow the on-screen prompts to install your preferred OS. Ensure you install all necessary drivers for the motherboard chipset, audio, LAN, and graphics card after OS installation for optimal performance.
Maintenance
- Dust Removal: Regularly clean dust from inside your computer case, especially from fans and heatsinks, using compressed air. Ensure the system is powered off and unplugged before cleaning.
- Driver Updates: Keep your motherboard drivers (chipset, audio, LAN) and graphics card drivers updated to ensure system stability and performance. Check the manufacturer's website for the latest drivers.
- BIOS/UEFI Updates: Periodically check for BIOS/UEFI updates from the manufacturer. Only update if necessary and follow the instructions carefully to avoid system damage.
- Cable Management: Ensure internal cables are neatly routed to improve airflow and prevent interference.
Troubleshooting
- No Power:
- Check if the power supply is connected correctly to the motherboard (24-pin and 8-pin connectors).
- Ensure the power supply switch is in the 'ON' position.
- Verify that the front panel power button cable is correctly connected to the motherboard.
- No Display:
- Ensure the graphics card is properly seated in the PCIe x16 slot and any necessary power cables are connected.
- Verify that the monitor cable is securely connected to the graphics card and the monitor.
- Try reseating the RAM modules.
- System Instability/Crashes:
- Check RAM installation; ensure modules are fully seated and compatible.
- Monitor CPU and system temperatures to prevent overheating.
- Ensure all drivers are correctly installed and up to date.
- Memory Errors:
- Confirm memory modules are installed in the correct slots (black main slots first).
- Ensure all installed memory modules are of unified specifications.
- Test memory modules individually to identify a faulty stick.
Specifications

| Component | Specification |
|---|---|
| Motherboard Model | SOYO MG-X99 D4 |
| Form Factor | Micro-ATX (18.8 x 21.5 cm) |
| CPU Socket | LGA 2011-3 |
| CPU Compatibility | Intel Xeon E5 V3 & V4 Series Processors |
| Chipset | Intel X99C612/H81/HM55/B75/P75/Q75/H77 (Note: Product title and some descriptions refer to X99, while some data points mention HM55. The board is designed for LGA 2011-3, typically associated with X99/C612.) |
| Included CPU | Intel Xeon E5 2680 V3 (12 Cores, 24 Threads, 2.5GHz Base, 3.3GHz Max Turbo, 30MB L3 Cache, 120W TDP) |
| Memory Slots | 4 x DDR4 DIMM slots |
| Memory Type Supported | DDR4 1333/1600/1866/2133/2400/2666MHz (4-channel architecture) |
| Max. RAM Capacity | 128 GB |
| Storage Interfaces | 3 x SATA 2.0 ports, 1 x NVME M.2 slot, 1 x NGFF M.2 slot, 1 x WIFI M.2 slot |
| PCIe Expansion Slots | 1 x PCI Express x16 (PCI-E 3.0), 1 x PCI Express x4 (PCI-E 2.0), 2 x PCI slots |
| Rear I/O Ports | 2 x PS/2 ports, 6 x USB 2.0 ports, 1 x RJ45 Gigabit LAN port, 1 x 3-in-1 Audio port (Line In/Out/Mic In) |
| Onboard Connectors | 24-pin ATX power, 8-pin ATX12V power, 2 x USB 2.0 headers (supports 4 USB 2.0 ports), 2 x Fan headers (CPU_FAN, SYS_FAN), F_AUDIO, F_PANEL, F_SPEAKER, LPC Debug, TPM Header (TPM2.0: MSLPC-14PIN), JCMOS |
| Audio Codec | Realtek ALC 6-Channel HD Audio |
| LAN | Realtek 1000Mbps Gigabit LAN |

Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact the seller directly. Keep your proof of purchase for any warranty claims.
User Tips
- Thermal Paste: Ensure you have thermal paste available for CPU cooler installation, as it may not always be included with the kit.
- Memory Configuration: When installing RAM, prioritize the black main slots. For optimal stability and performance, use memory modules with identical specifications.
- CPU/RAM Condition: Note that while the motherboard is new, the CPU and RAM included in the kit are used components. They are tested to ensure full functionality before shipping.
- Chipset Identification: The motherboard is an X99 platform, but the chipset might be identified as HM55 or other compatible chipsets in some system utilities. This is a known characteristic for some X99 boards.





