G.Skill Ripjaws Series 16GB 260-Pin DDR4 SO-DIMM DDR4 2133 (PC4 17000) Laptop Memory Model F4-2133C15S-16GRS Single 16GB DDR4 memory upgrade for laptop computers 2133MHz memory speed, PC4-17000 standard Full memory timings of CL15 (15-15-15-36) - 260 pins Requires voltage of only 1.20V which means longer battery life Features Auto-Overclocking which allows qualified systems to detect the highest available speed and automatically adjust BIOS settings to match