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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

  • CPU Socket TypeAM4
  • CPU TypeAMD Socket AM4, support for: AMD Ryzen 5000 Series / 3rd Gen
  • ChipsetAMD B550
  • Number of Memory Slots2x288pin (DDR4)
  • Memory Standard3rd Gen AMD Ryzen Processors: Support for DDR4 4866(O.C.)/ 4
  • Maximum Memory Supported64GB

Option B550I AORUS PRO AX

Struck-through versions exist but are not stocked here.

  • 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.

Highlights

  • 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

Specifications

BrandGIGABYTE
ModelB550I AORUS PRO AX
CPU Socket TypeAM4
CPU TypeAMD Socket AM4, support for: AMD Ryzen 5000 Series / 3rd Gen Ryzen and 3rd Gen Ryzen with Radeon Graphics Processors
* Support for Ryzen 5000 Series with BIOS UPDATE. Refer to GIGABYTE website for CPU support list.
ChipsetAMD B550
Number of Memory Slots2x288pin (DDR4)
Memory Standard3rd 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
Maximum Memory Supported64GB
Channel SupportedDual Channel
Memory Performance ProfileIntel XMP 2.0
PCI Express 4.0 x161 x PCI Express x16 slot (PCIEX16), integrated in the CPU:
3rd Generation AMD Ryzen processors support PCIe 4.0 x16 mode
New Generation AMD Ryzen with Radeon Graphics processors support PCIe 3.0 x16 mode
Serial ATA (SATA)4 x SATA 6Gb/s
M.21 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 RAID0/1/10
Onboard Video ChipsetIntegrated in the New Generation AMD Ryzen with Radeon Graphics processors:
1 x DisplayPort, supporting a maximum resolution of 5120x2880@60 Hz
* Support for DisplayPort 1.4 version, HDCP 2.3, and HDR.
2 x HDMI ports, supporting a maximum resolution of 4096x2160@60 Hz
* Support for HDMI 2.1 version, HDCP 2.3, and HDR.
Support for up to 3 displays at the same time
Maximum shared memory of 16GB
Audio ChipsetRealtek ALC1220-VB codec
* The back panel line out jack supports DSD audio.
Audio 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.
LAN ChipsetRealtek 2.5GbE LAN chip
Max LAN Speed2.5Gbps
Wireless LANIntel 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 160MHz wireless standard and up to 2.4 Gbps data rate
* Actual data rate may vary depending on environment and equipment.
BluetoothBLUETOOTH 5
Back I/O Ports1 x DisplayPort
2 x HDMI ports
1 x USB 3.2 Gen 2 Type-A port (red)
4 x USB 3.2 Gen 1 ports
1 x USB Type-C port, with USB 3.2 Gen 2 support
1 x Q-Flash Plus button
1 x RJ-45 port
2 x SMA antenna connectors (2T2R)
3 x audio jacks
Onboard USB1 x USB 3.2 Gen 1 header
1 x USB 2.0/1.1 header
Other Connectors1 x CPU fan header
2 x system fan headers
1 x addressable LED strip header
1 x RGB LED strip header
1 x front panel header
1 x front panel audio header
1 x speaker header
1 x Trusted Platform Module (TPM) header (2x6-pin, for the GC-TPM2.0_S module only)
1 x Clear CMOS jumper
Form FactorMini ITX
LED LightingRGB
Dimensions (W x L)6.7" x 6.7"
Power Pin1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
Windows 11Supported
FeaturesI/O Controller:
iTE I/O Controller Chip
H/W Monitoring:
Voltage detection
Temperature detection
Fan speed detection
Overheating warning
Fan fail warning
Fan speed control
* Whether the fan speed control function is supported will depend on the cooler you install.
BIOS:
1 x 256 Mbit flash
Use of licensed AMI UEFI BIOS
PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Unique Features:
Support for APP Center
* Available applications in APP Center may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications.
@BIOS
EasyTune
F
Shipping weight1.09 kg
Package size272 × 236 × 102 mm

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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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