Hi there. I have an Asus X553MA laptop. I want to upgrade the RAM from 4Gb to 8Gb. Current memory installed is 4Gb DDR3 1333mHz. The laptop's manual states under 'memory': 'DDR3 MHz SDRAM, up to 8 G'. I'm looking a purchasing an: '8Gb DDR3 PC3L-12800 . CL=11 . Unbuffered . NON-ECC . DDR3-1600 . 1.35V'. Are the specification for the 8Gb memory compatible for my Asus X553MA ? If yes, thank you for the confirmation. If not, please let me know what I should be looking for? Many thanks in advance.