Description
B550M K (rev. 1.1)
Key Features
Supports AMD Ryzen 5000 Series/ Ryzen 5000 G-Series/ Ryzen 4000 G-Series and Ryzen 3000 and Ryzen 3000 G-Series Processors
Dual Channel ECC/ Non-ECC Unbuffered DDR4, 4 DIMMs
Ultra Durable PCIe 4.0 Ready x16 Slot
Dual Ultra-Fast NVMe PCIe 4.0/3.0 M.2 Connectors
High Quality Audio Capacitors and Audio Noise Guard for Ultimate Audio Quality
GbE LAN with Bandwidth Management
Rear DisplayPort and HDMI for Multi-display Support
Smart Fan 5 Features Multiple Temperature Sensors, Hybrid Fan Headers with FAN STOP
Anti-Sulfur Resistors Design
PERFORMANCE
M.2 PCIe 4.0 Slot
M.2 PCIe 4.0 x4 slot with Lower impedance.
PCIe 4.0 Slot
PCIe 4.0 x16 slot with faster bandwidth and lower impedance.
CONNECTIVITY
Dual NVMe PCIe 4.0/3.0 M.2 Connectors
With NVMe PCIe 4.0/3.0 x4 and PCIe 3.0 x2 M.2 connectors onboard, GIGABYTE Motherboards bring users to experience NVMe mode or SATA mode connectivity for M.2 SSD devices. Delivering up to 64 Gb/s data transfer speed, the dual M.2 connectors design provides an ideal storage solution while also supporting in RAID modes.
GbE LAN with Bandwidth Management
GbE LAN features a network bandwidth management application which helps to improve network latency and maintain low ping times to deliver better responsiveness in crowded LAN environments.
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 offering 48 Gb/s of bandwidth – twice times more than previous generation. This unlocks the potential for users to transfer multiple video streams, as well as a native cinematic 21:9 ratio (which most movies are shot in), Full HDR and HDCP 2.3 support, to offer the best visual experience for viewers.
The Industry’s Leading LAN Static-Electricity & Surge Protection
GIGABYTE motherboards use ICs with up to 3 times the ESD resistance levels compared to traditional ICs. This helps to better protect the motherboard and its components against potential damage caused by static electricity. GIGABYTE motherboards also feature special anti-surge ICs that protect your motherboard, and your PC from any surge in power delivery that may occur, helping to ensure that your PC is equipped to deal with any potentially irregular and inconsistent power delivery.
COOLING
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.
5 Temperature Sensors
2 Fan Pin Headers
All Fan Pin Headers Upgraded to Hybrid Fan Headers
Interoperable Fans and Sensors
Intuitive UI for Fan Control
FAN STOP
Achieve fan silence. With Fan Stop, map any fan to stop completely when temperatures drop below a specified threshold. Which fan stops, based on readings from which sensor, and at what temperature—all of it can be customized to your liking.
Hybrid Fan Pin Headers
Assume complete control over your liquid cooling setup! Smart Fan 5 receives up-to-the-second information on flow-rate and water-temperature through the Hybrid Fan Pin Headers or external thermistor sensors—giving you absolute mastery over your PC.
All Hybrid Fan Headers can automatically detect the type of cooling device whether it be fan or pump with different PWM or Voltage mode.
New Smart Fan 5 Software
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.
AUDIO
High-End Audio Capacitors
GIGABYTE motherboards use high-end audio capacitors. These high quality capacitors help deliver high resolution and high fidelity audio to provide the most realistic sound effects for gamers.
Audio Noise Guard
GIGABYTE motherboards feature an audio noise guard that essentially separates the board’s sensitive analog audio components from potential noise pollution at the PCB level.
ULTRA DURABLE
GIGABYTE Patented Double Locking Bracket
Double locking bracket
First Lock
Inserted from the top for better retention
Second Lock
Soldered for a stronger bond
Solid Pin Power Connectors
B550 motherboards feature solid plated ATX 12V 8pin power connectors for offering stable power supply while CPU overloading.
Solid Pin Power connector advantages
Larger contact area for electricity
More metal quantity to sustain higher power and generated heat
Ultra durable and longer lifespan
START SULFURIZATION PROTECTION
Sulfur compounds in the air can penetrate tiny onboard resistors creating chemical change and causing these resistors to open or short. If either of these occurs the motherboard will fail to function. By equipping resistors with an Anti-Sulfur Design GIGABYTE gives Ultra Durable Motherboards a whole new meaning.
The Industry’s Leading Surge Protection
GIGABYTE motherboards also feature special anti-surge IC that protect your motherboard, helping to ensure that your PC is equipped to deal with any potentially irregular electrical spikes.
Humidity Protection Glass Fabric PCB
There is nothing more harmful to the longevity of your PC than moisture, and most parts of the world experience moisture in the air as humidity at some point during the year. GIGABYTE motherboards have been designed to make sure that humidity is never an issue, incorporating a new Glass Fabric PCB technology that repels moisture caused by humid and damp conditions. Glass Fabric PCB technology uses a new PCB material which reduces the amount of space between the fiber weave, making it much more difficult for moisture to penetrate compared to traditional motherboard PCBs. This offers much better protection from short circuit and system malfunction caused by humid and damp conditions.
High Temperature Protection Lower RDS(on) MOSFETs Design
GIGABYTE motherboards use Low RDS(on) MOSFETs which reduce energy wastage through unnecessary residual heat dissipation. This all amounts to tangible energy savings which are beneficial for both end-users and the environment without impacting system performance.
Specification
CPU
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
AMD B550
Memory
4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity) of system memory
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
Dual channel memory architecture
Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for Extreme Memory Profile (XMP) memory modules
Onboard Graphics
Integrated Graphics Processor with AMD Radeon Graphics support:
1 x DisplayPort, supporting a maximum resolution of 5120×2880@60 Hz
1 x HDMI port, supporting a maximum resolution of 4096×2160@60 Hz
Audio
Realtek Audio CODEC
High Definition Audio
2/4/5.1/7.1-channel
LAN
Realtek GbE LAN chip (1 Gbps/100 Mbps/10 Mbps)
Expansion Slots
1 x PCI Express x16 slot, integrated in the CPU:
AMD Ryzen 5000 Series/3000 Series Processors support PCIe 4.0 x16 mode
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:
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:
AMD Ryzen 5000 Series/3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
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:
Supporting PCIe 3.0 x2 SSDs
4 x SATA 6Gb/s connectors, integrated in the Chipset:
Support for RAID 0, RAID 1, and RAID 10
USB
CPU:
4 x USB 3.2 Gen 1 ports on the back panel
Chipset:
2 x USB 3.2 Gen 1 ports available through the internal USB header
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 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x system fan header
2 x M.2 Socket 3 connectors
4 x SATA 6Gb/s connectors
1 x front panel header
1 x front panel audio header
1 x USB 3.2 Gen 1 header
1 x USB 2.0/1.1 header
1 x Trusted Platform Module (TPM) header (2×6 pin, for the GC-TPM2.0_S module only)
1 x Clear CMOS jumper
Back Panel Connectors
1 x PS/2 keyboard/mouse port
1 x DisplayPort
1 x HDMI port
4 x USB 3.2 Gen 1 ports
4 x USB 2.0/1.1 ports
1 x RJ-45 port
3 x audio jacks
I/O Controller
iTE I/O Controller Chip
H/W Monitoring
Voltage detection
Temperature detection
Fan speed detection
Fan fail warning
Fan speed control
BIOS
1 x 128 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
@BIOS
EasyTune
Smart Backup
System Information Viewer
Support for Q-Flash
Operating System
Support for Windows 11 64-bit
Support for Windows 10 64-bit
Form Factor
Micro ATX Form Factor; 24.4cm x 24.4cm
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