G.SKILL 8GB (1 x 8GB) Ripjaws Series DDR4 PC4-1700 2133MHz SO-DIMM Laptop Memory Module (CL15) 1.20V F4-2133C15S-8GRS Single 8GB DDR4 memory upgrade for laptop computers 2133MHz memory speed, PC4-17000 standard Full memory timings of CL15 (15-15-15-36) - 260 pins.Color may vary function remains the same. 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