AM4 and LGA1700 are CPU sockets standards specified by AMD and Intel.
AMD’s 3rd Generation Ryzen CPUs require the AM4 socket to be present on the motherboard. AMD recommends its X570 chipset that comes with the AM4 socket and support for PCIe 4 and DDR4 RAM.
Alternately, the LGA1700 socket is specified by Intel for its 12th Generation Alder Lake CPUs. Intel recommends its Z690 chipset with the LGA1700 socket and PCIe 5 and DDR5 RAM support.