am having Dell Inspiron 3542 with 0RK2KV motherboard, Intel i3-4005U CPU and 4GB of RAM and I wish to upgrade my RAM.

Now the Intel's website mentions the maximum RAM support to be 16GB DDR3L 1333/1600 or LPDDR3 1333/1600 whereas Dell's Community Moderator's reply to a post says

The maximum memory supported on Dell Inspiron 3542/3543 is 8GB DDR3L with clock speed of 1600 MHz.

So, what should I go for...8GB or 16GB? It's clear that I can go for DDR3L which is unanimously said by both but I'm bit confused about the max size supported. It's clear that I want to go for the best available performance but also do not want to waste the money if at all 16GB is not supported. Could anyone please help?