ASROCK ULTRA M.2 PCIe A320M-HDV R4.0 AM4 MOTHERBOARD HDMI DVI VGA $88.36 delivered with PIN4TECH Discount using afterpay.
4 payments of $22.09
Great option if you have an older Ryzen system and you want to reuse your CPU for a new build although this motherboard will accept up to a Ryzen 9 Processor
https://www.youtube.com/watch?v=wF8EuEfKH3Q&t=745s
That video shows a gigabyte motherboard but even with a Ryzen 5 3600 your not loosing much to a much superior and pricer motherboard.
You could argue spending more for a b350/450 but for a second computer/kids whats the point? I would suggest using 65W CPUS for this type of board and should be trouble free.
does this need bios update for latest ryzen