My IdeaPad 540 has two M.2 slots and replaceable RAM (I replaced the 8GB it came with with a 32GB stick). The battery seems very easy to replace, too (only one

My IdeaPad 540 has two M.2 slots and replaceable RAM (I replaced the 8GB it came with with a 32GB stick). The battery seems very easy to replace, too (only one additional screw IIRC).