Hello, guys. I try to choose a new RAM for my laptop. Now I have 4 Gb RAM, but I need 8 Gb. My product model - HP 15ay044ur. Can you answer to me, which model of RAM is suitable for my laptop? Now I have this one: Memory DDR3L-1600 SDRAM, 4 GB (1 x 4 Gb) Sorry for my bad English. I hope you can help me.