The GIGABYTE B550M DS3H AC R2 is a Micro-ATX motherboard designed for AMD Ryzen processors using the AM4 socket. Based on the AMD B550 chipset, it combines DDR4 memory support, dual M.2 storage connectors, PCIe expansion and integrated wireless networking for desktop PC builds.
AMD Ryzen AM4 Platform
The motherboard supports selected AMD Ryzen 5000, Ryzen 5000 G-Series, Ryzen 4000 G-Series and Ryzen 3000 series processors. Its digital VRM design provides processor power delivery, while the VRM Thermal Armor Advanced heatsink helps manage temperatures around the power circuitry. Processor compatibility depends on the motherboard revision and BIOS version.
DDR4 Dual-Channel Memory
Four DDR4 DIMM slots support up to 128GB of system memory in a dual-channel configuration. The board supports XMP memory profiles and advertised overclocked memory speeds up to 4733 MT/s, depending on the processor and memory configuration.
PCIe Expansion and Dual M.2 Storage
The primary PCIe x16 slot supports PCIe 4.0 with compatible Ryzen 5000 and Ryzen 3000 processors. A secondary PCIe x16-length slot operates at PCIe 3.0 x4, and an additional PCIe 3.0 x1 slot provides expansion flexibility.
Two M.2 connectors support NVMe and SATA storage, with interface capabilities depending on the connector and installed processor. Four SATA 6Gb/s connectors provide additional storage options.
Wi-Fi 5 and Gigabit Ethernet
Integrated dual-band 802.11ac Wi-Fi supports 2.4GHz and 5GHz wireless networking. Bluetooth is also integrated, while a Realtek Gigabit Ethernet controller provides wired network connectivity. The WIFI EZ-Plug design simplifies antenna connection.
Display and Peripheral Connectivity
Rear display connections include HDMI and DisplayPort outputs for compatible processors with integrated Radeon graphics. USB connectivity includes USB 3.2 Gen 1 and USB 2.0 ports. The board also provides audio connections and internal headers for additional front-panel connectivity.
Cooling and RGB Lighting
Smart Fan 6 provides PWM/DC fan control, configurable fan curves and temperature monitoring. RGB Fusion 2.0 supports compatible addressable RGB and standard RGB lighting components through the onboard LED headers.
Key Features
- AMD B550 chipset with AM4 processor socket
- Four DDR4 DIMM slots supporting up to 128GB
- PCIe 4.0 x16 graphics slot with compatible processors
- Two M.2 connectors and four SATA 6Gb/s ports
- Integrated dual-band Wi-Fi 5 and Bluetooth
- Realtek Gigabit Ethernet
- HDMI and DisplayPort outputs for supported processors
- Smart Fan 6 and RGB Fusion 2.0
- Q-Flash Plus BIOS update functionality
Applications
This motherboard is suitable for compact AMD desktop builds used for gaming, everyday computing and productivity. Its dual M.2 storage support, wireless connectivity and PCIe expansion provide flexibility for different system configurations.
DC Supplies Product Note
GIGABYTE lists multiple hardware revisions for this model. The VRM phase design and some component details differ between revisions, so check the revision printed on the motherboard before confirming compatibility or ordering revision-specific replacement components.
Technical Specifications
| Brand | GIGABYTE |
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| Model | B550M DS3H AC R2 |
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| Chipset | AMD B550 |
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| CPU Socket | AMD AM4 |
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| Supported Processors | Selected AMD Ryzen 5000, 5000 G-Series, 4000 G-Series and 3000 series processors |
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| VRM Design | Digital 5+3-phase on Rev. 1.0; 6+2-phase on Rev. 1.2 |
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| Memory Type | DDR4 |
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| Memory Slots | 4 x DIMM |
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| Maximum Memory | 128GB |
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| Memory Architecture | Dual channel |
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| Memory Speed | Up to 4733 MT/s (O.C.); CPU and memory dependent |
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| Primary Expansion Slot | 1 x PCIe x16, PCIe 4.0 with supported processors |
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| Additional Expansion | 1 x PCIe 3.0 x16-length slot (x4 mode), 1 x PCIe 3.0 x1 |
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| M.2 Storage | 2 x M.2 connectors; interface support varies by slot and CPU |
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| SATA Storage | 4 x SATA 6Gb/s |
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| Wireless Networking | Dual-band 802.11ac Wi-Fi 5, 2.4GHz and 5GHz |
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| Bluetooth | Bluetooth 5.0 on Rev. 1.0; check revision-specific specifications |
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| Wired Networking | Realtek Gigabit Ethernet |
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| Display Outputs | 1 x HDMI, 1 x DisplayPort |
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| USB Rear I/O | 4 x USB 3.2 Gen 1, 2 x USB 2.0/1.1 |
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| Audio | Realtek HD Audio |
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| Cooling Features | Smart Fan 6 |
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| Lighting Support | RGB Fusion 2.0, addressable RGB and RGB LED headers |
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| BIOS Features | Q-Flash Plus and Q-Flash |
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| Form Factor | Micro-ATX |
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| Dimensions | 24.4 x 24.4 cm |
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Frequently Asked Questions
Which processors are compatible with this motherboard?
It supports selected AMD Ryzen processors for the AM4 socket, including supported Ryzen 3000, 4000 G-Series and 5000 series models. Check the CPU support list for the exact processor and required BIOS version.
Does this motherboard support PCIe 4.0?
Yes. The primary PCIe x16 slot and CPU-connected M.2 storage interface support PCIe 4.0 with compatible processors. Actual interface speeds depend on the installed CPU.
Can two M.2 SSDs be installed?
Yes. The board has two M.2 connectors, with different interface capabilities depending on the connector and processor.
Does it include built-in Wi-Fi?
Yes. It includes dual-band Wi-Fi 5 and Bluetooth, along with antenna connectors on the rear I/O panel.
Can the HDMI and DisplayPort outputs be used with any Ryzen processor?
No. Display output requires a compatible processor with integrated Radeon graphics. A processor without integrated graphics requires a separate graphics card for display output.
