Gigabyte AMD Ryzen B550M S2H AM4 PCIe 4.0 MicroATX Motherboard

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Gigabyte B550M S2H, AMD B550, AM4, DDR4, PCIe 4.0, 1x M.2, Realtek GbE LAN Chip, 4x USB 3.2 Gen1, mATX
Socket AM4
AMD B550 Chipset
4 x SATA & 6 x USB Ports
DDR4 (max 64GB, 2 slots)
mATX Form Factor

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Quickfind Code: Q4361 | Digitalpromo Code: B550MS2H-PR14

Availability: In stock


£89.99 Save £10.00

Order within 12 hours and 43 minutes for delivery on Tuesday, 26th January

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Gigabyte B550M S2H, AMD B550, AM4, DDR4, PCIe 4.0, 1x M.2, Realtek GbE LAN Chip, 4x USB 3.2 Gen1, mATX
Manufacturers Code: B550M S2H
EAN: 4719331809591

B550M S2H Micro-ATX Motherboard from Gigabyte

With Ultra Durable PC Performance

Revel in superior gaming with the GIGABYTE B550M S2H motherboard. This all-new high-end component offers the power and connectivity your PC deserves so you can upgrade your system with AMD's 3rd Generation Ryzen™ processors. This motherboard is perfect for gamers and PC enthusiasts who desire high-end performance but also care about aesthetics. This sturdy design delivers impeccable performance with ultra-durable components and a comprehensive cooling solution to stay cool under heavy workloads. Performance is never compromised, and aesthetics are greater than ever with the ability to address your PCs RGB lighting and light strip support that is compatible with GIGABYTE's RGB FUSION 2.0 software and can be customised with the RGB FUSION app.

Power Delivery that's Precise and Efficient

4+3 pure Digital VRM with Low RDS(on) MOSFETS

GIGABYTE motherboards utilize a 4+3 phases pure digital PWM + Low RDS(on) MOSFETs design to support 3rd Gen AMD Ryzen™ CPUs. It offers impeccable precision when delivering power to the motherboard's most demanding and energy-sensitive components, as well as delivering enhanced system performance and ultimate hardware scalability.

PCIe 4.0* Hardware Design

Enhance your Transfer Speeds

NVMe PCIe 4.0*/3.0 M.2 Connector

With an NVMe PCIe 4.0*/3.0 x4 M.2 connector onboard, you can utilise NVMe mode or SATA mode connectivity for M.2 SSD devices. They deliver up to 64 Gb/s data transfer speeds. The M.2 connector design provides an ideal storage solution for fast and efficient gaming.

Versatile Connectivity Options

I/O Ports -  Realtek 8118 Gaming LAN - Real-Time Network Monitoring

With integrated I/O ports, building a GIGABYTE PC is even easier. Realtek 8118 LAN is an impressive network chip for gamers with automatic bandwidth allocation to ensure the highest network priority of the game or application. It can deliver the most comprehensive features and the fastest and smoothest Internet experience.

Stay Protected from Surges in Power

LAN Static-Electricity & Surge Protection

GIGABYTE motherboards use ICs with up to three times the ESD resistance levels compared to traditional ICs. This protects the motherboard and its components a lot better against damage caused by static electricity. GIGABYTE motherboards also feature special anti-surge ICs that protect your motherboard and PC from any surges in power, making sure that your PC is equipped to deal with any potentially irregular or inconsistent power delivery.

Full Support for Video Streams

HDMI 2.1 for 4K / 60P / 21:9 / HDCP 2.3 Support

HDMI 2.1, which is backwards compatible with HDMI 2.0/1.4 and offers twice more bandwidth than previous generations. This unlocks the potential for you to transfer multiple video streams, as well as a native cinematic 21:9 ratio, Full HDR and HDCP 2.3 support, to offer the best visual experience.

HDMI 2.1 supports up to an impressive 48Gb/s bandwidth. Note: Only New Gen AMD Ryzen™ with Radeon™ Graphics processors support displaying function.

Stay Cool under Demanding Loads

Smart Fan 5

With Smart Fan 5 users can ensure that their gaming PC can maintain its performance while staying cool. Smart Fan 5 allows users to interchange their fan headers to reflect different thermal sensors at different locations on the motherboard. Not only that, with Smart Fan 5 more hybrid fan headers that support both PWM and Voltage mode fans have been introduced to make the motherboard more liquid cooling friendly. Achieve fan silence. With Fan Stop, map any fan to stop completely when temperatures drop below a specified threshold. Which fan stops is based on readings from which sensor, and what temperature of the stopping threshold can be customized to your liking. With Smart Fan 5 choose from different modes, Quiet to Full Speed, to match your system usage preferences. For each fan or pump, you can use the intuitive fan curve to define trigger thresholds and corresponding fan speeds.

Illuminate your PC with RGB Fusion 2.0


With this GIGABYTE motherboard, RGB Fusion 2.0 is even better. It offers addressable LEDs and lets you control onboard RGB and external RGB / addressable LED light strips for your PC. Filled with various colours and modes, RGB Fusion 2.0 on GIGABYTE motherboards are now upgraded with addressable LED support. With LED strips, you can experience more patterns, styles, and illuminations. Utilise support for either 5v or 12v addressable LED strips and up to 300 LED lights.

Enter the Gaming World with Incredible Audio

GIGABYTE motherboards use high-end audio capacitors. These high quality capacitors help deliver high resolution and high fidelity audio and offer the most realistic sound effects for gamers.

The audio noise guard essentially separates the board's sensitive analog audio components from the potential noise pollution at the PCB level.

Get Up and Running in Seconds

Q-Flash Plus

With GIGABYTE Q-Flash Plus, you don’t need to install the CPU, memory and graphics card nor enter the BIOS menu to flash the BIOS. Just download and save a new BIOS file (rename to gigabyte.bin) on the USB flash drive, then press the dedicated Q-Flash Plus button and you’re good to go!

Plug the 24pin & 8pin power supply cable into the motherboard.

Download and unzip the motherboard's compressed BIOS file and rename to "gigabyte.bin", save to a USB flash-drive, and plug it into the Q-Flash USB port.

Press the Q-Flash button, and the motherboard will start updating the BIOS automatically.


Edition     B550M S2H
Form Factor     MicroATX
CPU Socket     AM4
Chipset     AMD B550

RAM Memory Support
Memory Type     DDR4
Memory Channel     Dual (2)
Memory Type (ECC)     ECC/Non-ECC
Memory Type (R/U)     UDIMM (Unbuffered)
Memory Speed (Mhz)     

DDR4 - 2133
DDR4 - 2400
DDR4 - 2667
DDR4 - 2933
DDR4 - 3200
DDR4 - 3333(OC)
DDR4 - 3600(OC)
DDR4 - 4000(OC)
DDR4 - 4400(OC)
DDR4 - 4600(OC)
DDR4 - 4866(OC)
DDR4 - 5000(OC)

Max. Memory Capacity     64GB

Audio     Realtek ALC887 7.1 HD Audio

Graphics Support
Primary GPU Interface     PCIe 4.0 (x16)
NVIDIA SLI Support     N/A
AMD CrossFire Support     N/A
Integrated Graphics     Requires Processor Graphics or Discrete GPU
On-Board Graphics Connectors     None

Internal Connectivity
Expansion Slots     

1 x M.2, 22-42/60/80, PCIe Gen4x4/SATA3
2 x PCIe 3.0 x1
1 x PCIe 4.0 x16

SATA Support     N/A
RAID Support via     SATA
Storage Mode Support     


Internal I/O     

1 x 24-pin (Power)
1 x 8-pin (Power)
1 x Addressable Digital RGB Header
1 x Chassis Intrusion connector
1 x Clear CMOS jumper
1 x CPU Fan Connector
1 x Front Panel Audio Header
1 x Front Panel Connector
1 x RGB (RGBW) LED Strip Header
4 x SATA III - 6Gb/s
1 x Serial (COM) Header
1 x speaker header
2 x System Fan header
1 x TPM Header
1 x USB 2.0 Header
1 x USB 3.2 Gen1 Header

External Connectivity
Network Interface Type     Wired Gigabit LAN (10/100/1000)
Network Chip/Modules     1 x Realtek (Gigabit LAN)
Rear I/O Connectors     

1 x D-Sub (VGA)
1 x DVI-D
1 x HDMI
1 x Headphone-Out
1 x Line In
1 x Mic-In
1 x PS/2 Keyboard/Mouse Combo
1 x RJ-45
2 x USB 2.0
4 x USB 3.2 Gen1 Type-A

Additional Specifications
Water Cooled     No
Cooling     Passive Heatsinks
QPI Speed     N/A
Board Dimensions     244 x 205 mm
Additional Information
Model Number     B550M S2H
GTIN     4719331809591


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