Remember, If only replacing one Stick, to put that stick in DIMM A or DIMM 1.

There are five types of laptop laptop ram: DDR, DDR2, DDR3, DDR3L, and DDR4.

Make sure that whatever ram your laptop was using is replaced by that same type. Memory is not cross compatible with desktop memory, so make sure that your RAM is SODIMM laptop memory. SODIMMs are usually about 3" long, while desktop DIMMs are about 4"-5" long.