Technical Specifications:

CPU: AMD Socket AM4, supports AMD Ryzen™ 5000/5000 G/4000 G/3000/3000 G-Series Processors
Chipset: AMD B550
Memory: 4 x DDR4 DIMM slots, up to 128 GB, dual channel
Supports DDR4 4733(O.C.) – 2133 MHz, XMP, ECC and non-ECC unbuffered DIMMs*
Onboard Graphics: Integrated AMD Radeon™ Graphics
 1 x DisplayPort, max resolution 5120x2880@60Hz
 1 x HDMI, max resolution 4096x2160@60Hz
Audio: Realtek® Audio CODEC, HD Audio, 2/4/5.1/7.1-channel
LAN: Realtek® GbE LAN (1 Gbps/100 Mbps/10 Mbps)
Expansion Slots:
 1 x PCIe x16 (CPU, PCIe 4.0 for Ryzen 5000/3000, PCIe 3.0 for Ryzen G-Series/4000/3000 G)
 1 x PCIe x1 (Chipset, PCIe 3.0)
Storage Interface:
 1 x M.2 (M2A_CPU, CPU, PCIe 4.0 x4/x2 or 3.0 x4/x2, SATA support)
 1 x M.2 (M2B_SB, Chipset, PCIe 3.0 x2)
 4 x SATA 6Gb/s (RAID 0, 1, 10)
USB:
 CPU: 4 x USB 3.2 Gen 1 (back panel)
 Chipset: 2 x USB 3.2 Gen 1 (internal header), 6 x USB 2.0/1.1 (4 back, 2 internal)
Internal I/O Connectors: 1 x 24-pin ATX, 1 x 8-pin ATX 12V, 1 x CPU fan, 1 x system fan, 2 x M.2 slots, 4 x SATA 6Gb/s, front panel, front panel audio, USB 3.2 Gen 1 header, USB 2.0/1.1 header, TPM header, Clear CMOS jumper
Back Panel Connectors: 1 x PS/2, 1 x DisplayPort, 1 x HDMI, 4 x USB 3.2 Gen 1, 4 x USB 2.0/1.1, 1 x RJ-45, 3 x audio jacks
I/O Controller: iTE® I/O Controller Chip
H/W Monitoring: Voltage, temperature, fan speed, fan fail warning, fan speed control*
BIOS: 128 Mbit flash, AMI UEFI BIOS, PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0
Unique Features: APP Center, @BIOS, EasyTune, Smart Backup, System Information Viewer, Q-Flash
Bundled Software: Norton® Internet Security (OEM), LAN bandwidth management software
Operating System: Windows 11 64-bit, Windows 10 64-bit
Form Factor: Micro ATX, 24.4 x 24.4 cm

What's in the Box:

• 1 x B550M K Motherboard
• 1 x I/O Shield
• 1 x User Manual