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Compact Mini-ITX motherboard with black PCB, silver heatsinks and rear I/O shield

GIGABYTE

GIGABYTE B550I AORUS PRO AX AM4 AMD motherboard

SKU CH-KM4D-B2BQ4 MPN B550I AORUS PRO AX

Mini-ITX AM4 board with PCIe 4.0, dual M.2, 2.5 GbE LAN, Wi-Fi 6 and 64 GB DDR4 support

  • ProcessorAMD Socket AM4, support for: AMD Ryzen 5000 Series / 3rd Gen
  • ChipsetAMD B550
  • Form factorMini ITX
  • CPU socketAM4
  • Memory slot count2 × 288pin (DDR4)
  • Supported memory3rd Gen AMD Ryzen Processors: Support for DDR4 4866(O.C.)/ 4

Model B550I AORUS PRO AX

  • Supports Ryzen 5000 Series CPUs with a BIOS update
  • Dual-channel DDR4 up to 64 GB at 5300 MHz overclocked
  • PCIe 4.0 x16 slot plus dual M.2 with PCIe 4.0 x4 speeds
  • Intel Wi-Fi 6 AX200 and 2.5 GbE LAN for fast networking
  • Realtek ALC1220-VB codec delivers 7.1-channel audio with DSD support

Compact AM4 board for small builds

The GIGABYTE B550I AORUS PRO AX is a Mini-ITX motherboard built around the AMD B550 chipset. It accepts AM4 socket processors including Ryzen 5000 series and 3rd Gen Ryzen with a BIOS update. Dual-channel DDR4 memory up to 64 GB is supported across two slots.

Single M.2 slot with PCIe 4.0

One M.2 connector wired to the CPU provides PCIe 4.0 x4 bandwidth for a 2260 or 2280 NVMe SSD when a 3rd Gen Ryzen processor is installed. The board also offers four SATA 6Gb/s ports for additional drives. No second M.2 slot is present.

Ideal for compact Ryzen systems

Builders who need a tiny footprint with 2.5 GbE LAN, Wi-Fi 6 and a single high-speed NVMe drive will fit here. Users requiring multiple M.2 slots, more than two DIMMs or legacy PCI expansion should consider a larger form factor.

How it compares

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

Price $177.99
Cheaper than about 57% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameGIGABYTE
Model nameB550I AORUS PRO AX
Processor
CPU socketAM4
ChipsetAMD B550
Memory
Memory slot count2 × 288pin (DDR4)
Supported memory3rd Gen AMD Ryzen Processors:
Support for DDR4 4866(O.C.)/ 4600(O.C.)/ 4400(O.C.)/ 4000(O.C.)/ 3600(O.C.)/ 3333(O.C.)/ 3200/ 2933/ 2667/ 2400/ 2133 MHz memory modules
New Generation AMD Ryzen with Radeon Graphics processors:
Support for DDR4 5300(O.C.)/ 5200(O.C.)/ 5000(O.C.)/ 4866(O.C.)/ 4600(O.C.)/ 4400(O.C.)/ 4000(O.C.)/ 3600(O.C.)/ 3333(O.C.)/ 3200/ 2933/ 2667/ 2400/ 2133 MHz memory modules
Max supported RAM64 GB
Memory channelsDual Channel
Memory profilesIntel XMP 2.0
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 2260/2280 SSDs:
- 3rd Generation AMD Ryzen processors support SATA and PCIe 4.0 x4/x2 SSDs
- New Generation AMD Ryzen with Radeon Graphics processors support SATA and PCIe 3.0 x4/x2 SSDs
1 x M.2 connector (M2B_SB) on the back of the motherboard, integrated in the Chipset, supporting Socket 3, M key, type 2260/2280 SSDs:
- Supporting SATA and PCIe 3.0 x4/x2 SSDs
SATA and RAID support0/1/10
Audio & video
Audio chipRealtek ALC1220-VB codec
* The back panel line out jack supports DSD audio.
Sound channels2/4/5.1/7.1-channel
* To configure 7.1-channel audio, you have to use an HD front panel audio module and enable the multi-channel audio feature through the audio driver.
Connectivity
Ethernet controllerRealtek 2.5GbE LAN chip
Maximum network speed2.5 Gbit/s
Wi-Fi standardIntel Wi-Fi 6 AX200
WIFI a, b, g, n, ac with wave 2 features, ax, supporting 2.4/5 GHz Dual-Band
Support for 11 ax 160 MHz wireless standard and up to 2.4 Gbit/s data rate
* Actual data rate may vary depending on environment and equipment.
Bluetooth support5
Ports & slots
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 factorMini ITX
Width and length6.7 in × 6.7 in
Shipping weight1.09 kg
Package size272 × 236 × 102 mm
Compatibility
Windows 11 supportSupported
More details
LightingRGB

Other versions of this model

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Questions about this item

What does the DDR4 4866 O.C. figure mean for real-world memory speed?

It is the highest overclocked DDR4 frequency the board can reach with 3rd Gen Ryzen CPUs; actual speed depends on the memory kit and CPU memory controller.

How does the PCIe 4.0 x16 slot operate with different processors?

3rd Gen Ryzen CPUs run the slot at PCIe 4.0 x16, while newer Ryzen with Radeon Graphics CPUs run it at PCIe 3.0 x16.

What clearance does the M.2 heatsink need for a 2280 drive?

The M.2 slot accepts 2260 and 2280 form factors and the included Thermal Guard covers the full length of a 2280 SSD.

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