RAM Crucial SO-DIMM 4GB DDR4 2666MHz CL19 Single Ranked:Crucial has brought out with a new SO-DIMM type memory, which you can use for laptops designed to play moderately graphically intensive games. The Crucial SO-DIMM 4GB DDR4 2666MHz CL19 Single Ranked needs a vacant DDR4 slot to run. The memory module has a total capacity of 4GB system memory. The 19 CL latency and a clock speed running at 2666MHz are also the other good reasons why you should choose Crucial memory module. Key Features of the Crucial SO-DIMM 4GB DDR4 2666MHz CL19 Single Ranked System Memory The Crucial RAM provides a total capacity of 4GB 2666MHz clock speed The RAM requires mere 1,2V This Crucial memory is in the DDR4 type This is the so-called unbuffered version