This motherboard supports AMD Ryzen 5000, 4000 G-Series, and 3000 series processors, providing dual-channel DDR4 memory support across four DIMM slots. It features PCIe 4.0 x16 and dual M.2 connectors for high-speed NVMe storage, multiple USB 3.2 and 2.0 ports, and HDMI/DisplayPort outputs for multi-display setups. Integrated GbE LAN with bandwidth management, high-quality audio capacitors, and Smart Fan 5 with FAN STOP technology ensure reliable performance, superior cooling, and immersive sound quality. Anti-sulfur resistors, surge protection, and humidity-resistant PCB design add extra durability and longevity.
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Specifications and features |
| Product Code | GA-B550M-K |
| CPU | 1. AMD Socket AM4, support for: AMD Ryzen 5000 Series/ Ryzen 5000 G-Series/ Ryzen 4000 G-Series and Ryzen 3000 and Ryzen 3000 G-Series Processors |
| Chipset | 1. AMD B550 |
| Memory | 1. 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity) of system memory |
| 2. Support for DDR4 4733(O.C.) / 4600(O.C.) / 4400(O.C.) / 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3733(O.C.) / 3600(O.C.) / 3466(O.C) / 3400(O.C.) / 3200 / 2933 / 2667 / 2400 / 2133 MHz memory modules |
| 3. Dual channel memory architecture |
| 4. Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules |
| * ECC memory (ECC mode) support varies by CPU |
| 5. Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules |
| 6. Support for Extreme Memory Profile (XMP) memory modules |
| Onboard Graphics | Integrated Graphics Processor with AMD Radeon Graphics support: |
| 1. 1 x DisplayPort, supporting a maximum resolution of 5120x2880@60 Hz |
| * Support for DisplayPort 1.4 version, HDCP 2.3, and HDR. |
| 2. 1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz |
| * Support for HDMI 2.1 version, HDCP 2.3, and HDR. |
| Maximum shared memory of 16 GB |
| Audio | 1. Realtek Audio CODEC |
| 2. High Definition Audio |
| 3. 2/4/5.1/7.1-channel |
| * You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings. |
| LAN | 1. Realtek GbE LAN chip (1 Gbps/100 Mbps/10 Mbps) |
| Expansion Slots | 1 x PCI Express x16 slot, integrated in the CPU: |
| 1. AMD Ryzen 5000 Series*/3000 Series Processors support PCIe 4.0 x16 mode |
| * Actual support may vary by AMD CPU's specification. |
| 2. AMD Ryzen 5000 G-Series/4000 G-Series/3000 G-Series Processors support PCIe 3.0 x16 mode |
| 1 x PCI Express x1 slot, integrated in the Chipset: |
| 1. Supporting PCIe 3.0 x1 mode |
| Storage Interface | 1 x M.2 connector (M2A_CPU), integrated in the CPU, supporting Socket 3, M key, type 2280 SSDs: |
| 1. AMD Ryzen 5000 Series/3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs |
| 2. AMD Ryzen 5000 G-Series/4000 G-Series/3000 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 2280 SSDs: |
| 1. Supporting PCIe 3.0 x2 SSDs |
| 4 x SATA 6Gb/s connectors, integrated in the Chipset: |
| 1. Support for RAID 0, RAID 1, and RAID 10 |
| USB | CPU: |
| 1. 4 x USB 3.2 Gen 1 ports on the back panel |
| Chipset: |
| 1. 2 x USB 3.2 Gen 1 ports available through the internal USB header |
| 2. 6 x USB 2.0/1.1 ports (4 ports on the back panel, 2 ports available through the internal USB header) |
| Internal I/O Connectors | 1. 1 x 24-pin ATX main power connector |
| 2. 1 x 8-pin ATX 12V power connector |
| 3. 1 x CPU fan header |
| 4. 1 x system fan header |
| 5. 2 x M.2 Socket 3 connectors |
| 6. 4 x SATA 6Gb/s connectors |
| 7. 1 x front panel header |
| 8. 1 x front panel audio header |
| 9. 1 x USB 3.2 Gen 1 header |
| 10. 1 x USB 2.0/1.1 header |
| 11. 1 x Trusted Platform Module (TPM) header (2x6 pin, for the GC-TPM2.0_S module only) |
| 12. 1 x Clear CMOS jumper |
| Back Panel Connectors | 1. 1 x PS/2 keyboard/mouse port |
| 2. 1 x DisplayPort |
| 3. 1 x HDMI port |
| 4. 4 x USB 3.2 Gen 1 ports |
| 5. 4 x USB 2.0/1.1 ports |
| 6. 1 x RJ-45 port |
| 7. 3 x audio jacks |
| I/O Controller | 1. iTE I/O Controller Chip |
| H/W Monitoring | 1. Voltage detection |
| 2. Temperature detection |
| 3. Fan speed detection |
| 4. Fan fail warning |
| 5. Fan speed control |
| * Whether the fan speed control function is supported will depend on the cooler you install. |
| BIOS | 1. 1 x 128 Mbit flash |
| 2. Use of licensed AMI UEFI BIOS |
| 3. PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0 |
| Unique Features | 1. 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 |
| Smart Backup |
| System Information Viewer |
| 2. Support for Q-Flash |
| Bundled Software | 1. Norton Internet Security (OEM version) |
| 2. LAN bandwidth management software |
| Operating System | 1. Support for Windows 11 64-bit |
| 2. Support for Windows 10 64-bit |
| Form Factor | 1. Micro ATX Form Factor , 24.4cm x 24.4cm |
| Remark | 1. Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors' website or 3rd party website. |
| 2. Most hardware/software vendors may no longer offer drivers to support Win9X/ME/2000/XP. If drivers are available from the vendors, we will update them on the GIGABYTE website. |
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