Gigabyte B550 AMD AM4 Socket Motherboard (Micro-ATX)
Experience reliable performance and versatile connectivity with the Gigabyte B550 AMD AM4 Socket Motherboard, designed for AMD Ryzen 5000, 4000, and 3000 Series processors. With optimized power delivery, ultra-fast storage support, and enhanced cooling and lighting control, this micro-ATX board is built to unlock the full potential of your PC.
Key Features
AMD AM4 Compatibility
- Supports AMD Ryzen 5000 G-Series Processors
- Supports AMD Ryzen 5000 Series Processors
- Supports AMD Ryzen 4000 G-Series Processors
- Supports AMD Ryzen 3000 G-Series Processors
- Supports AMD Ryzen 3000 Series Processors
Power Design
- 5+3 phases pure digital VRM solution
- Low RDS(on) MOSFETs for precise and efficient power delivery
- Optimized to support 3rd Gen AMD Ryzen CPUs and deliver enhanced system performance and scalability
Memory
- Dual Channel DDR4 architecture
- 4 x DIMM sockets, up to 128 GB system memory (32 GB per DIMM)
- Supports DDR4 2133–4733 (OC) MT/s memory modules
- Supports ECC and non-ECC Un-buffered DIMM modules (as specified)
- Supports Extreme Memory Profile (XMP)
Performance & Storage
Ultra-Fast Storage
- 2 x M.2 slots, including PCIe 4.0 support
- Dual NVMe PCIe 4.0*/3.0 M.2 connectors (x4 and x2)
- Supports both NVMe and SATA modes for M.2 SSD devices
- Up to 64 Gb/s data transfer speed
- Ideal for high-speed storage and RAID configurations
AMD StoreMI Technology
- Combines SSD speed with HDD capacity into a single drive
- Reduces boot times and enhances overall system responsiveness
- Automatically learns usage patterns to quickly access key files
- Offers SSD-like performance with HDD capacity at an affordable cost
Connectivity & Networking
Expansion Slots
- 1 x PCIe x16 (PCIEX16) from CPU
- Ryzen 5000/3000 Series: PCIe 4.0 x16
- Ryzen 5000 G/4000 G/3000 G Series: PCIe 3.0 x16
- Supports either a graphics card or an NVMe SSD in this slot
- 1 x PCIe x16 (PCIEX4) from chipset, PCIe 3.0 x4
- 1 x PCIe x1 (PCIEX1) from chipset, PCIe 3.0 x1
- PCIe UD Slot design: PCIe 4.0 x16 slot with 10X strength and improved heat dissipation for graphics cards
Networking
- Realtek GbE LAN (1 Gbps/100 Mbps/10 Mbps)
- Bandwidth management software for optimized latency and low ping in busy LAN environments
Display Outputs
- 1 x DisplayPort 1.4
- Max resolution: 5120 x 2880 @ 60 Hz
- HDCP 2.3 and HDR support
- 1 x HDMI 2.1
- Max resolution: 4096 x 2160 @ 60 Hz
- Backwards compatible with HDMI 2.0/1.4
- 48 Gb/s bandwidth, supports 21:9 ratio, Full HDR, HDCP 2.3
Cooling & Thermal Design
Efficient Thermal Solution
- VRM Thermal Armor Advanced for improved cooling around power delivery components
Smart Fan 6
- Multiple fan headers supporting PWM/DC fans and water-cooling pumps
- Up to 24 W (12 V x 2 A) per header with over-current protection
- Precision fan control with multiple temperature and fan-speed points
- Dual curve modes: Slope / Stair for different usage scenarios
- Fan Stop function to completely stop fans below user-defined temperatures
RGB Lighting & Customization
RGB FUSION 2.0
- Onboard RGB and external RGB/Addressable LED strip control
- Supports 5V Addressable LED strips with up to 300 LEDs
- Multiple patterns, effects, and speed settings
- Unified control across compatible motherboards, graphics cards, and peripherals
- Gaming mode enables lighting effects to react to selected games
Audio
- Realtek ALC1220 high-definition audio CODEC
- High-end audio capacitors for high-resolution, high-fidelity sound
- 2/4/5.1/7.1-channel audio support via audio software configuration
- Back panel line-out jack supports DSD audio
- Audio Noise Guard design to isolate sensitive analog audio circuitry
Reliability & Convenience
Ultra Durable Design
- Solid plated ATX 12V 8-pin power connectors for stable power delivery under load
Q-Flash Plus
- BIOS update without installing CPU, memory, or graphics card
Technical Specifications
| Category |
Details |
| CPU Socket |
AMD Socket AM4 |
| Supported CPUs |
AMD Ryzen 5000 G-Series, 5000 Series, 4000 G-Series, 3000 G-Series, 3000 Series Processors |
| Chipset |
AMD B550 |
| Form Factor |
Micro ATX, 24.4 cm x 24.4 cm |
Memory
| Feature |
Details |
| DIMM Slots |
4 x DDR4 DIMM sockets |
| Max Capacity |
Up to 128 GB (32 GB per DIMM) |
| Speed Support |
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 MT/s |
| Architecture |
Dual Channel |
| ECC Support |
ECC Un-buffered DIMM 1Rx8/2Rx8; non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 |
| XMP |
Supported |
Graphics (APU Required)
| Feature |
Details |
| Integrated GPU |
AMD Radeon Graphics (on supported CPUs) |
| DisplayPort |
1 x DP, max 5120 x 2880 @ 60 Hz; DP 1.4, HDCP 2.3, HDR |
| HDMI |
1 x HDMI, max 4096 x 2160 @ 60 Hz; HDMI 2.1, HDCP 2.3, HDR |
| Max Shared Memory |
16 GB (graphics configuration may vary by CPU) |
Audio
| Feature |
Details |
| Codec |
Realtek ALC1220 |
| Channels |
2/4/5.1/7.1-channel (configurable via audio software) |
| Enhancements |
High-end audio capacitors, Audio Noise Guard, DSD via line out |
LAN
| Feature |
Details |
| Controller |
Realtek GbE LAN chip |
| Speed |
1 Gbps / 100 Mbps / 10 Mbps |
Storage
| Connection |
Details |
| M.2 (M2A_CPU) |
CPU-integrated, Socket 3 M key, type 2280; Ryzen 5000/3000: SATA & PCIe 4.0 x4/x2; Ryzen 5000 G/4000 G/3000 G: SATA & PCIe 3.0 x4/x2 |
| M.2 (M2B_SB) |
Chipset-integrated, Socket 3 M key, type 2280; SATA & PCIe 3.0 x2 |
| SATA |
4 x SATA 6 Gb/s connectors |
| RAID (NVMe) |
RAID 0, 1, 10 |
| RAID (SATA) |
RAID 0, 1, 10 |
USB
| Source |
Ports |
| CPU |
4 x USB 3.2 Gen 1 (rear panel) |
| Chipset |
1 x USB 3.2 Gen 1 Type-C (internal header) |
| Chipset |
2 x USB 3.2 Gen 1 (internal header) |
| Chipset |
4 x USB 2.0/1.1 (2 rear, 2 internal header) |
Internal I/O Headers
- 1 x 24-pin ATX main power connector
- 1 x 8-pin ATX 12V power connector
- 1 x CPU fan header
- 2 x system fan headers
- 2 x addressable LED strip headers
- 2 x RGB LED strip headers
- 1 x CPU cooler LED strip/RGB LED strip header
- 2 x M.2 Socket 3 connectors
- 4 x SATA 6 Gb/s connectors
- 1 x front panel header
- 1 x front panel audio header
- 1 x USB Type-C header (USB 3.2 Gen 1)
- 1 x USB 3.2 Gen 1 header
- 1 x USB 2.0/1.1 header
- 1 x TPM header (2x6 pin, for GC-TPM2.0_S only)
- 1 x serial port header
- 1 x Clear CMOS jumper
- 1 x Q-Flash Plus button
Back Panel Connectors
- 2 x USB 2.0/1.1 ports
- 1 x PS/2 keyboard/mouse port
- 1 x HDMI port
- 1 x DisplayPort
- 4 x USB 3.2 Gen 1 ports
- 1 x RJ-45 LAN port
- 2 x antenna connectors
- 3 x audio jacks
(Actual support may vary by CPU.)
I/O & Monitoring
- iTE I/O Controller chip
- Voltage, temperature, and fan speed detection
- Overheating and fan fail warnings
- Fan speed control (dependent on installed fan type)
BIOS
- 1 x 128 Mbit flash
- AMI UEFI BIOS (licensed)
- PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Software & OS Support
Unique Features (APP Center)
- @BIOS
- EasyTune
- RGB Fusion
- Smart Backup
- System Information Viewer
(Availability may vary by motherboard model and specifications.)
Firmware & Utility Support
Bundled Software
- Norton Internet Security (OEM version)
- LAN bandwidth management software
Operating Systems
- Windows 11 64-bit
- Windows 10 64-bit
