Asus PRIME B860M-K-CSM

An Micro-ATX board on the B860M chipset, LGA1851 socket. Memory support covers 2 DDR5 slots up to 128GB total. Expansion covers 2 M.2 slots and 2 PCIe slots. Pick the board for its socket before anything else — chipset niceties come after.

Its $169.99 price tag places it squarely in mid-range territory. PlanMyPC's builder flags compatibility problems automatically and tracks the latest motherboard deals from multiple stores. Support and warranty service run through ASUS, 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.