DDR4 2666MHz PC4-21300 288 Pin Unbuffered Non-ECC 1.2V CL19 Single Rank 1Rx8 based 512x8 Power Supply: VDD=1.2V (1.14V to 1.26V) VDDQ = 1.2V (1.14V to 1.26V) Module Size: 8GB Package: 1x8GB For Selected DDR4 Desktop; Not for Laptop / Notebook PC, Mini PC, All in one Device Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States