ASRock B860M Pro-A

This is an Micro-ATX board on the B860M chipset, LGA1851 socket. Memory support covers 4 DDR5 slots up to 256GB total. Expansion covers 2 M.2 slots and 2 PCIe slots. Pick the board for its socket before anything else — chipset niceties come after.

At $109.99 it sits in the budget motherboard bracket. Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current motherboard prices across retailers. Support and warranty service run through ASRock, with terms that vary by region. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.