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Micro-ATX motherboard in black with silver heatsinks and RGB lighting

GIGABYTE

GIGABYTE B550M AORUS ELITE AX AMD motherboard

SKU CH-CARQ-3S748 MPN B550M AORUS ELITE AX

Micro-ATX AM4 board with four DDR4 slots, dual M.2 connectors, PCIe 4.0 x16 and Realtek GbE LAN

  • ProcessorRyzen 3000G Series / Ryzen 4000G Series / Ryzen 5000 Series
  • ChipsetAMD B550
  • Form factorMicro ATX
  • CPU socketAM4
  • Memory slot count4 × 288pin (DDR4)
  • Supported memoryDDR4 3200
  • Supports Ryzen 3000 to 5000 series processors with AM4 socket
  • Dual-channel DDR4 3200 memory up to 128 GB capacity
  • 5+3 phase digital VRM delivers stable power to CPU
  • PCIe 4.0 x16 slot plus dual M.2 connectors for fast storage
  • RGB Fusion 2.0 and Smart Fan 5 for custom lighting and cooling

Micro-ATX AM4 board for Ryzen 3000 to 5000 builds

This Micro-ATX motherboard uses the AMD B550 chipset and an AM4 socket. It accepts Ryzen 3000, 4000 and 5000 series processors. Four DDR4 slots support up to 128 GB in dual-channel mode with XMP 2.0 profiles and ECC un-buffered modules.

Builders needing PCIe 4.0 graphics

The single PCIe 4.0 x16 slot from the CPU suits one modern graphics card. The chipset provides one M.2 connector for a PCIe 4.0 or 3.0 NVMe SSD. Realtek GbE LAN covers wired networking. Users who need multiple M.2 slots, PCIe 5.0 or integrated Wi-Fi should choose a different board.

Single PCIe 4.0 x16 slot from the CPU

The top expansion slot runs at PCIe 4.0 x16 when a Ryzen 5000 or 3000 series CPU is installed. Ryzen 4000 G-Series and 5000 G-Series processors operate the slot at PCIe 3.0 x16. This single lane-width decision determines graphics and high-speed add-in card compatibility.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $125.99
Cheaper than about 68% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameGIGABYTE
Product linePrime
Model nameB550M AORUS ELITE AX
Part numberB550M AORUS ELITE AX
Processor
ProcessorRyzen 3000G Series / Ryzen 4000G Series / Ryzen 5000 Series / Ryzen 5000G Series
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count4 × 288pin (DDR4)
Supported memoryDDR4 3200
Max supported RAM128 GB
Memory channelsDual Channel
Memory profilesIntel XMP 2.0
ECC supportYes
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots1 x M.2 connector (M2A_CPU), integrated in the CPU, supporting Socket 3, M key, type 2242/2260/2280/22110 SSDs:
AMD Ryzen 5000 Series and Ryzen 3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
AMD Ryzen Ryzen 5000 G-Series and Ryzen 4000 G-Series Processors support SATA and PCIe 3.0 x4/x2 SSDs
1 x M.2 connector (M2B_SB), integrated in the Chipset, supporting Socket 3, M key, type 2242/2260/2280 SSDs:
Supporting SATA and PCIe 3.0 x2 SSDs
SATA and RAID support0/1/10
Connectivity
Maximum network speed1 Gbit/s
Wi-Fi standardWi-Fi 802.11 ax
Bluetooth support5.3
Ports & slots
PCIe 5.0 x16 slots1 x PCI Express x16 slot (PCIEX16), integrated in the CPU:
AMD Ryzen 5000 Series and Ryzen 3000 Series Processors support PCIe 4.0 x16 mode
AMD Ryzen Ryzen 5000 G-Series and Ryzen 4000 G-Series Processors support PCIe 3.0 x16 mode
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe 3.0 x16 slots1 x PCI Express 3.0 x16
PCIe x16 slots1 x PCI Express x16
PCIe x4 slots1 x PCI Express x16 slot (PCIEX4), integrated in the Chipset:
Supporting PCIe 3.0 x4 mode
PCIe x1 slots1 x PCI Express x1 slot (PCIEX1), integrated in the Chipset:
Supporting PCIe 3.0 x1 mode
PCI slots1 x PCI Slot
Additional slots1 x CNR
Rear panel ports1 x PS/2 keyboard/mouse port
1 x DVI-D port
1 x HDMI port
2 x SMA antenna connectors (2T2R)
4 x USB 3.2 Gen 1 ports
4 x USB 2.0/1.1 ports
1 x RJ-45 port
3 x audio jacks
PS/2 ports1
Serial ports3
Video connectors1
HDMI ports1 x HDMI
Ethernet port1 x RJ45
USB 3.1 ports2 x USB 3.1
USB 3.0 ports10 x USB 3.0
USB 2.0 ports9 x USB 2.0
S/PDIF output1 x Optical, 1 x Coaxial
Game/midi ports1
Audio jacks6 Ports
Onboard USB headers1 x USB 3.2 Gen 1 header
1 x USB 2.0/1.1 header
Power
Power connectors1 × 24-pin ATX main power connector
1 × 8-pin ATX 12 V power connector
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Shipping weight1.18 kg
Package size279 × 279 × 76 mm
Compatibility
Windows 11 supportSupported
In the box
In the box1 unit
More details
PCI express 2.0 x161 x PCI Express 2.0 x16
ESATA1 x eSATA 3Gb/s
S/PDIF in1 x Optical, 1 x Coaxial

Questions about this item

Will my Ryzen 5000 processor fit this AM4 socket?

Yes, the board supports Ryzen 5000 Series and Ryzen 5000 G-Series CPUs on the AM4 socket.

Can I run four DDR4 sticks at 3200 speed?

The board has four 288-pin slots for dual-channel DDR4 up to 3200 and a maximum of 128 GB.

Does the primary M.2 slot run at PCIe 4.0 with a Ryzen 5000 CPU?

With a Ryzen 5000 processor the top M.2 connector operates at PCIe 4.0 x4 speeds.

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