1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your GIGABYTE B450M DS3H motherboard. This motherboard supports AMD Ryzen processors with an AM4 socket and features a Micro ATX form factor, DDR4 memory support, M.2 slot, and multiple display outputs.

Image 1.1: GIGABYTE B450M DS3H Motherboard and its retail packaging.
2. Setup and Installation
Follow these steps for proper installation of the GIGABYTE B450M DS3H motherboard into your computer system.
2.1 Component Overview

Image 2.1: Top-down view of the GIGABYTE B450M DS3H motherboard, highlighting key component locations.
2.2 CPU Installation
- Ensure the CPU socket lever is in the open position.
- Carefully align the triangular mark on the AMD Ryzen processor with the mark on the AM4 socket.
- Gently place the CPU into the socket without forcing it.
- Lower the socket lever to secure the CPU.
- Install the CPU cooler according to its manufacturer's instructions.
2.3 Memory (RAM) Installation

Image 2.2: Angled view of the motherboard, illustrating the four DDR4 DIMM slots.
- The motherboard supports Dual Channel Non-ECC Unbuffered DDR4 memory across 4 DIMM slots.
- 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.
2.4 Storage Device Installation

Image 2.3: Angled view of the motherboard, highlighting the M.2 slot and PCIe expansion slots.
- M.2 SSD: The motherboard features an Ultra-Fast PCIe Gen3 x4 M.2 connector supporting both PCIe NVMe and SATA mode SSDs. Insert the M.2 SSD into the slot and secure it with the provided screw.
- SATA Drives: Connect SATA data cables from your SSDs/HDDs to the SATA 3 ports on the motherboard. Connect power cables from your power supply to the drives.
2.5 Expansion Card Installation
- Insert PCIe expansion cards (e.g., graphics cards, sound cards) into the appropriate PCIe slots. Ensure they are fully seated and secured with a case screw.
2.6 Power Connections
- Connect the 24-pin ATX main power connector from your power supply to the motherboard.
- Connect the 8-pin ATX 12V CPU power connector to the motherboard.
2.7 Front Panel and Peripheral Connections
- Connect the front panel headers (power button, reset button, HDD LED, power LED) to the corresponding pins on the motherboard. Refer to the motherboard diagram for correct pin assignments.
- Connect USB 2.0 and USB 3.1 Gen1 front panel connectors.
- Connect audio front panel connectors.
- Connect case fans to the available fan headers (CPU_FAN, SYS_FAN). The motherboard features Smart Fan 5 with 5 temperature sensors and 2 hybrid fan headers.
3. Operating Instructions
Once all components are installed and connected, you can power on your system.
3.1 Initial Power On and BIOS Access
- Press the power button on your computer case.
- During the Power-On Self-Test (POST), repeatedly press the DEL key to enter the BIOS/UEFI setup utility.
- Configure boot order, system time, and other settings as needed.
3.2 Operating System Installation
- Insert your Windows 10 or Windows 7 installation media (USB drive or DVD).
- Set the boot order in BIOS to prioritize your installation media.
- Follow the on-screen prompts to install your operating system.
3.3 Driver Installation
- After OS installation, install the necessary drivers from the GIGABYTE support website or the included driver CD/USB. Key drivers include chipset, audio, LAN, and graphics (if using integrated graphics).
3.4 GIGABYTE Utilities
- The GIGABYTE APP Center includes utilities like EasyTune and Cloud Station for system monitoring, overclocking, and cloud connectivity.
- RGB Fusion software allows control over RGB LED strips connected to the motherboard, supporting 7 colors.
4. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your motherboard.
- Dust Removal: Periodically clean dust from inside your computer case, especially from heatsinks and fans, using compressed air. Ensure the system is powered off and unplugged before cleaning.
- BIOS Updates: Check the official GIGABYTE website for the latest BIOS updates. BIOS updates can improve compatibility, stability, and performance. Follow GIGABYTE's instructions carefully when updating the BIOS.
- Driver Updates: Keep your system drivers updated by regularly checking the GIGABYTE support website for the latest versions.
5. Troubleshooting
This section addresses common issues you might encounter.
- No Power: Ensure all power cables (24-pin ATX, 8-pin CPU) are securely connected to the motherboard and power supply. Verify the power supply switch is on.
- No Display: Check that your monitor is connected to the correct video output (HDMI, DVI-D) on the motherboard's rear I/O panel or your graphics card. Ensure the graphics card is properly seated and powered.
- System Fails to Boot: Verify that RAM modules are correctly seated in their slots. Check all component connections. If using a new CPU, ensure the BIOS version supports it.
- Fan Issues: If fans are not spinning or are excessively loud, check their connections to the motherboard's fan headers. The Smart Fan 5 feature can be configured in BIOS to adjust fan speeds.
- Peripheral Not Detected: Ensure USB devices are connected to functional ports. Try different ports or devices to isolate the issue. Install the latest chipset drivers.
For more advanced troubleshooting or issues not covered here, please refer to the comprehensive user manual available on the GIGABYTE website or contact GIGABYTE technical support.

Image 5.1: Rear I/O panel, showing HDMI, DVI-D, USB, LAN, and audio ports for connecting external devices.
6. Specifications
Key technical specifications for the GIGABYTE B450M DS3H motherboard.
| Feature | Specification |
|---|---|
| Brand | GIGABYTE |
| Model Name | B450M DS3H |
| CPU Socket | Socket AM4 |
| Compatible Processors | AMD 1st Generation Ryzen, AMD 2nd Generation Ryzen, Ryzen with Radeon Vega Graphics |
| Chipset Type | AMD B450 |
| RAM Memory Technology | DDR4 |
| Memory Speed | Up to 3600 MHz (OC) |
| Number of DIMM Slots | 4 |
| Storage Interface | 1 x M.2 (PCIe Gen3 x4/SATA), 4 x SATA 6Gb/s |
| Video Outputs | HDMI, DVI-D |
| USB Ports | USB 3.1 Gen1, USB 2.0 |
| LAN | Realtek Gigabit LAN |
| Audio | High Quality Audio Capacitors, Audio Noise Guard |
| Form Factor | Micro ATX (24.4 cm x 21.5 cm) |
| Operating System Support | Windows 10, Windows 7 |
7. Warranty and Support
For warranty information, please refer to the warranty card included with your product or visit the official GIGABYTE website. GIGABYTE provides technical support and resources to assist you with any product-related inquiries.
- Online Resources: Visit the GIGABYTE official website for product support, driver downloads, BIOS updates, and FAQs.
- Documentation: Additional documentation, including a detailed User Guide and Safety Information, is available in PDF format on the product support page.
- Contact Support: For direct assistance, please contact GIGABYTE customer service through their website.





