(If these terms all sound confusing to you, check out our explanations on memory technology generations and storage form factors).
For example, the motherboard establishes the power of the processor your PC can handle, the memory technology ( DDR5, DDR4, DDR3, etc), the storage form factor ( 2.5-inch, mSATA, or m.2) and the storage interface (SATA or PCIe). (If these terms all sound confusing to you, check out our explanations on memory technology generations and storage form factors).