DDR3 1333MHZ=PC3-10600. You can check the SPD interface on CPU-Z. Free user support.
Crucial 16GB Kit (2 x 8GB) DDR3L -1600 SODIMM 1.35V CL11
16gb kit 2 x 8gb DDR3 PC3-12800 RAM Lenovo Laptop T420 T430 T520 T530 W520 W530
Crucial Balistix DDR4 32gb White Kit ( 2 x 16gb - 2666mhz )
Crucial 16GB (2 x 8GB) DDR4 RAM 2666MHz - Matching Kit
Crucial 16GB (2x 8GB) Kit DDR3L 1600MHz PC3-12800 UDIMM Desktop 240-Pin CL11 RAM
16Gb DDR4 - 2 X 8Gb Crucial CT8G4DFD8213.C16FHP - Tested Working - Free P&P !
