The key features of a b650 are

Memory Support: DDR5 support with four DIMM slots, capable of high overclock speeds

M.2 Storage:
	One PCIe 5.0 x4 M.2 slot 
	Additional PCIe 4.0 M.2 slots for extra ultra-fast storage. 
	PCIe Slots:
	One main PCIe 4.0 x16 slot for GPUs
	Several PCIe 3.0 x1 slots for expansion cards.  

Networking & Connectivity Wi-Fi 6E wireless support plus Bluetooth Gigabit LAN (GbE) for reliable wired networking.

Rear I/O & Ports Variety of USB ports including USB-C, USB-A Gen2/Gen1. Display outputs: HDMI + DisplayPort (for CPUs with integrated graphics). Standard audio and networking jacks.

Cooling & Thermal Advanced Thermal Design with larger heatsinks and M.2 Thermal Guard to help keep SSDs cool under load.
Smart Fan 6 support for PWM/DC fan and pump control with custom curves.

Convenience & BIOS Tools Q-Flash Plus: Update BIOS without needing CPU, RAM, or GPU installed.
PCIe EZ-Latch for easier GPU installation/removal.

Audio High-fidelity onboard audio with quality capacitors and noise guard shielding.