Replace memory. Which one is that?

Au
2

Wanted to upgrade my laptop, but I do not know which bars are suitable. From the sticker I will not be smart. Can someone tell me what specifications this bar has and which one to buy (which are suitable) to replace it?

Replace memory. Which one is that
Ma

This is a DDR3L-1600 PC3L-12800S

Al

(deleted, since there's now a more precise answer)