Gigabyte B550M DS3H AC, AMD B550, WiFi+BT, AM4

Form factor
µATX
Plinth
AMD AM4
Chipset
AMD B550
CPU Compatibility
Ryzen 5000G, Ryzen 5000, Ryzen 4000G, Ryzen 3000, without TDP restriction (manufacturer list )
RAM
4x DDR4 DIMM, dual PC4-37866U/DDR4-4733 (OC), max 128GB (UDIMM)
Expansion slots
1x PCIe 4.0 x16, 1x PCIe 3.0 x16 (x4), 1x PCIe 3.0 x1, 1x M.2/M-Key (PCIe 4.0 x4/SATA, 22110/2280/2260/2242), 1x M.2/M-Key (PCIe 3.0 x2/SATA, 2280/2260/2242), 1x M.2/E-Key (PCIe, 2230, occupied with WiFi+BT module)
External connections
1x DVI-D (iGPU), 1x HDMI 2.1 (iGPU), 4x USB-A 3.0 (5Gb/s), 4x USB-A 2.0 (480Mb/s), 1x Gb LAN (Realtek RTL8118AS), 3x jack, 1x PS/2 combo, 2x antenna connector (RP-SMA)
Internal connections
1x USB 3.0 header (5Gb/s, 2x USB 3.0), 1x USB 2.0 header (480Mb/s, 2x USB 2.0), 4x SATA 6Gb/s (B550), 1x serial, 1x TPM header
Header Cooling
1x CPU fan 4-pin, 2x fan 4-pin
Header Lighting
3x 4-Pin RGB (+12V/G/R/B, max. 2A), 2x 3-Pin ARGB (+5V/DATA/GND, max. 5A)
Buttons/Switches
USB BIOS Flashback/Q-Flash Plus (internal)
Audio
7.1 (Realtek ALC887)
Graphic
iGPU
Wireless
Wi-Fi 5 (WLAN 802.11a/b/g/n/ac, 1x1, Intel 3168), Bluetooth 4.2
RAID Levels
0/1/10 (B550)
Multi-GPU
N/A
Electrical connections
1x 24-pin ATX, 1x 8-pin EPS12V
VRM
8 real phases (5+3), PWM controller: RAA229004 (max. 8 phases)
MOSFETs CPU
5x 46A 4C10N/10x 4C06N
MOSFETs SoC
3x 46A 4C10N/4C06N
Lighting
N/A
BIOS
1x 32MB (256Mb)
Particularities
Audio+solid capacitors, ECC support, Onboard TPM 2.0 support (AMD fTPM)