GIGABYTE B550M K

1. AMD Socket AM4, support for: AMD Ryzen™ 5000 Series/ Ryzen™ 5000 G-Series/ Ryzen™ 4000 G-Series and Ryzen™ 3000 Series Processors

(Please refer “CPU Support List” for more information.)

1. AMD B550

1. 4 x DDR4 DIMM sockets supporting up to 128 GB (32 GB single DIMM capacity) of system memory
2. 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
3. Dual channel memory architecture
4. Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules*
   * ECC memory (ECC mode) support varies by CPU
5. Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
6. Support for Extreme Memory Profile (XMP) memory modules

(Please refer “Memory Support List” for more information.)

1. 1 x DisplayPort, supporting a maximum resolution of 5120×2880@60 Hz
   * Support for DisplayPort 1.4 version, HDCP 2.3, and HDR.
2. 1 x HDMI port, supporting a maximum resolution of 4096×2160@60 Hz
   * Support for HDMI 2.1 version, HDCP 2.3, and HDR.

Maximum shared memory of 16 GB

1. Realtek^® Audio CODEC
2. High Definition Audio
3. 2/4/5.1/7.1-channel
   * 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.

1. Realtek^® GbE LAN chip (1 Gbps/100 Mbps)

1. AMD Ryzen™ 5000 Series/3000 Series Processors support PCIe 4.0 x16 mode
2. AMD Ryzen™ 5000 G-Series/4000 G-Series Processors support PCIe 3.0 x16 mode

1 x PCI Express x1 slot, integrated in the Chipset:

1. Supporting PCIe 3.0 x1 mode

1. AMD Ryzen™ 5000 Series/3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
2. AMD Ryzen™ 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:

1. Supporting PCIe 3.0 x2 SSDs

4 x SATA 6Gb/s connectors, integrated in the Chipset:

1. Support for RAID 0, RAID 1, and RAID 10

1. 4 x USB 3.2 Gen 1 ports on the back panel

Chipset:

1. 2 x USB 3.2 Gen 1 ports available through the internal USB header
2. 6 x USB 2.0/1.1 ports (4 ports on the back panel, 2 ports available through the internal USB header)

1. 1 x 24-pin ATX main power connector
2. 1 x 8-pin ATX 12V power connector
3. 1 x CPU fan header
4. 1 x system fan header
5. 2 x M.2 Socket 3 connectors
6. 4 x SATA 6Gb/s connectors
7. 1 x front panel header
8. 1 x front panel audio header
9. 1 x USB 3.2 Gen 1 header
10. 1 x USB 2.0/1.1 header
11. 1 x Trusted Platform Module (TPM) header (2×6 pin, for the GC-TPM2.0_S module only)
12. 1 x Clear CMOS jumper

1. 1 x PS/2 keyboard/mouse port
2. 1 x DisplayPort
3. 1 x HDMI port
4. 4 x USB 3.2 Gen 1 ports
5. 4 x USB 2.0/1.1 ports
6. 1 x RJ-45 port
7. 3 x audio jacks

1. iTE^® I/O Controller Chip

1. Voltage detection
2. Temperature detection
3. Fan speed detection
4. Fan fail warning
5. Fan speed control
   * Whether the fan speed control function is supported will depend on the cooler you install.

1. 1 x 128 Mbit flash
2. Use of licensed AMI UEFI BIOS
3. PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0

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

1. Norton^® Internet Security (OEM version)
2. LAN bandwidth management software

1. Support for Windows 11 64-bit
2. Support for Windows 10 64-bit

1. Micro ATX Form Factor; 24.4cm x 24.4cm

1. Due to different Linux support condition provided by chipset vendors, please download Linux driver from chipset vendors’ website or 3rd party website.
2. 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.