Would be looking for B550 motherboard.
This has $40 off with promo code at Newegg until end of August. Quite good board:

https://pcpartpicker.com/product/Vb3mP6/gigabyte-b550-aorus-elite-ax-v2-atx-am4-motherboard-b550aorus-elite-axv2

Hi,

Exactly what parts do you already have? The R5 5600x is a pretty decent CPU for the price.
I am not a big fan of Gigabyte boards, but I guess they are OK.

The board listed above has 2 x m.2 and 4 x RAM slots. Pretty decent too.

If you don't have the CPU in hand, I would try and get a am5 CPU with according board and DDR5 RAM. am4 processors and DDR4 are pretty much at the end of their lifespan. Not to say you can't, just be aware.

Originally posted by Rumpelcrutchskin:

Would be looking for B550 motherboard.
This has $40 off with promo code at Newegg until end of August. Quite good board:

https://pcpartpicker.com/product/Vb3mP6/gigabyte-b550-aorus-elite-ax-v2-atx-am4-motherboard-b550aorus-elite-axv2

+ 1 for this specific mobo.