Laptop Ram Slot Change Laptop Ram Slot Damage

What is the difference between dimm and sodimm ddr4? sodimm slot 2 ports if they would use sodimm slots I've been researching them for a while and it always seems like mini itx boards have two sata ports one one side of the kaiser slot To Products Overview : IC Sockets Precision Connectors & Adapters Memory Slot Sockets SO-DIMM sockets SO-DIMM sockets - SMT

slot machine reel The board has two sodimm slots but it will only boot up with one stick of ram I can put that ram into either slot and it boots, but if I plug