BLS4G3D1609ES2LX0 is a single 4GB DDR3 modules that operates at speeds up to 1600 MT/s and has a CL9 latency with extended timings of 9-9-9-24. It is Performance, Low Profile, Low Voltage, and is non-ECC. It conforms to the industry standard UDIMM layout of 240 pins and is compatible with computers that take DDR3 UDIMM memory.