Gigabyte Motherboard B550M K AMD AM4 B550 Max128GB DDR4 PCI Express Micro ATX Retail

AMD B550 Ultra Durable Motherboard with Digital VRM Solution, PCIe 4.0 x16 Slot, Dual PCIe 4.0/3.0 M.2 Connectors, GbE LAN, Smart Fan 5 with FAN STOP


• Supports AMD Ryzen™ 5000 Series/ Ryzen™ 5000 G-Series/ Ryzen™ 4000 G-Series and Ryzen™ 3000 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


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.

*Actual support may vary by CPU.


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.

CPU
AMD Socket AM4, support for: AMD Ryzen^TM 5000 Series/ Ryzen^TM 5000 G-Series/ Ryzen^TM 4000 G-Series and Ryzen^TM 3000 Series Processors
(Please refer "CPU Support List" for more information.)

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 ^Note
Note: ECC memory (ECC mode) support varies by CPU
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for Extreme Memory Profile (XMP) memory modules
(Please refer "Memory Support List" for more information.)

Onboard Graphics
Integrated Graphics Processor:
1 x DisplayPort, supporting a maximum resolution of 5120x2880 at 60 Hz
Note: Support for DisplayPort 1.4 version, HDCP 2.3, and HDR.
1 x HDMI port, supporting a maximum resolution of 4096x2160 at 60 Hz
Note: Support for HDMI 2.1 version, HDCP 2.3, and HDR.
Maximum shared memory of 16 GB

Audio
Realtek Audio CODEC
High Definition Audio
2/4/5.1/7.1-channel
Note: 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
Realtek GbE LAN chip (1 Gbps/100 Mbps)

Expansion Slots
1 x PCI Express x16 slot, integrated in the CPU:
AMD Ryzen^TM 5000 Series/3000 Series Processors support PCIe 4.0 x16 mode
AMD Ryzen^TM 5000 G-Series/4000 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^TM 5000 Series/3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
AMD Ryzen^TM 5000 G-Series/4000 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 (2x6 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
Note: Whether the fan speed control function is supported will depend on the cooler you install.

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
Note: Available applications in APP Center may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications.
at BIOS
EasyTune
Smart Backup
System Information Viewer
Support for Q-Flash
Support for Xpress Install

Bundled Software
Norton Internet Security (OEM version)
LAN bandwidth management software

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

Remark
Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors website or 3rd party website.
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.

Item Dimension (L inchxW inchxH inch)
11 x 11 x 3

Weight
3.00 lb