The GIGABYTE B550M AORUS ELITE AX is a Micro-ATX motherboard designed for AMD Ryzen processors using the AM4 socket. Built on the AMD B550 chipset, it combines DDR4 memory support, PCIe expansion, dual M.2 storage connectivity and integrated wireless networking in a compact motherboard layout.
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 5+3-phase digital VRM design provides processor power delivery, while the enlarged MOSFET heatsink supports thermal management around the power circuitry. Check the CPU support list and required BIOS version before installation.
DDR4 Memory Support
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 MHz, 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 3000 and Ryzen 5000 processors, while supported G-Series and Ryzen 4000 processors operate it at PCIe 3.0. A second PCIe x16-length slot operates at PCIe 3.0 x4, alongside a PCIe 3.0 x1 slot.
Two M.2 connectors provide storage flexibility. The CPU-connected M.2 slot supports PCIe 4.0 x4/x2 or SATA SSDs with compatible processors. The chipset-connected slot supports PCIe 3.0 x2 or SATA SSDs. Four SATA 6Gb/s connectors provide additional drive connections.
Wi-Fi 6E and Connectivity
The onboard Realtek Wi-Fi 6E module supports 2.4GHz, 5GHz and 6GHz wireless bands, with Bluetooth connectivity. Wired networking is provided by a Realtek Gigabit Ethernet controller. The rear I/O includes HDMI and DVI-D display outputs, USB ports, antenna connectors and audio connections.
Cooling and RGB Lighting
Fan headers and temperature monitoring support system cooling management. RGB Fusion 2.0 provides addressable LED and standard RGB LED headers for compatible lighting components.
Key Features
- AMD B550 chipset and 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
- Onboard Wi-Fi 6E and Bluetooth
- Realtek Gigabit Ethernet networking
- HDMI and DVI-D display outputs
- RGB Fusion 2.0 and Q-Flash Plus
Applications
This motherboard is suitable for compact desktop PC builds using compatible AMD Ryzen processors. Its combination of dual M.2 storage, wireless networking and PCIe expansion supports gaming systems, general-purpose desktop computers and productivity workstations.
DC Supplies Product Note
Processor compatibility, PCIe generation and memory speeds depend on the installed CPU and BIOS version. Confirm the motherboard revision and GIGABYTE CPU support list before selecting a processor or updating the BIOS.
Technical Specifications
| Brand | GIGABYTE |
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| Product Series | AORUS |
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| Model | B550M AORUS ELITE AX |
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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, 3000 and 3000 G-Series processors |
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| Power Design | 5+3-phase digital VRM |
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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 MHz (O.C.); processor and memory dependent |
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| Primary Expansion Slot | 1 x PCIe x16; PCIe 4.0 or PCIe 3.0 depending on CPU |
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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 |
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| SATA Storage | 4 x SATA 6Gb/s |
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| Wireless Networking | Realtek Wi-Fi 6E, 2.4GHz / 5GHz / 6GHz |
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| Bluetooth | Bluetooth; version varies by motherboard revision |
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| Wired Networking | Realtek Gigabit Ethernet |
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| Display Outputs | 1 x HDMI, 1 x DVI-D |
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| USB Rear I/O | 4 x USB 3.2 Gen 1, 4 x USB 2.0/1.1 |
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| Audio | Realtek HD Audio, up to 7.1-channel |
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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 and 5000 series models. Check GIGABYTE's CPU support list for the exact processor and BIOS requirements.
Does the motherboard support PCIe 4.0?
Yes. The primary graphics slot and CPU-connected M.2 connector support PCIe 4.0 with compatible Ryzen processors. Some processor families limit these connections to PCIe 3.0.
Can two M.2 SSDs be installed?
Yes. The motherboard has two M.2 connectors, with different interface capabilities depending on the connector and installed processor.
Does it include wireless networking?
Yes. It features onboard Wi-Fi 6E and Bluetooth. Wireless capabilities and Bluetooth version should be checked against the specific board revision.
Does it support RGB lighting?
Yes. RGB Fusion 2.0 supports compatible addressable LED and RGB LED lighting components.
