BLS4G4S240FSD is a 4GB DDR4 Laptop module that operates at speeds up to 2400 MT/s and has a CL16 latency. It is an Unbuffered SODIMM. It conforms to the industry standard DDR4 SODIMM layout of 260 pins and is compatible with systems that take DDR4 2400MT/s SODIMM memory.