Jeremy has a Lenovo 11S and the power supply died. So he replaced it along with replacing the motherboard. It runs great, but he'd like to increase the RAM as well. Leo says it depends on the motherboard and the amount of room inside that laptop. Leo says it's odd that he was able to replace it. Laptops are highly customized, so that is likely a problematic endeavor. Laptops tend to not be upgradable by design. Jeremy can check with crucial.com and kingston.com. If it can be done, they will tell him.