Does my laptop has 2 RAM slots? Do all HP laptops have 2 or more Ram slots?

[PurryCatsMeow]

So I was wondering if my laptop has 2 RAM slots just because I would like to boost my laptop's performance in future. Some internet users claim that using dual-channel memory is actually better than using single-channel memory. In this case, I need a confirmation for my laptop if it can be installed with 2 RAM sticks in it. People suggest me to check the specification of my laptop's memory by using the task manager on performance tab. I did what they said and I found out that my laptop uses 1 of 2 RAM slots. But still, I just want to make sure how many RAM slots does my laptop has because I am too concern to open my laptop's back panel to check the RAM slot due to not having experience on electronics and stuff. Also, do all HP laptops have at least 2 RAM slots? And, is my laptop has soldered  RAM or removable one? That's all I want to know. I will be waiting for the solution from you guys. Thanks for reading my problem even though it is not a big deal. Have a good day.

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[Huffer]

2 memory slots. Uses DDR4-2666 SO-DIMM. You have one 4 gb module now and it could accept up to a pair of 16 gig modules. This is the Service Manual HP has posted on your support page:

Manual 

This is for an earlier series but the layout is the same as your laptop so still works for you as a service manual. Not all HP laptops have two slots. Some have one slot (generally lower priced models) and a few have soldered on memory. 

Post back with any more questions and please accept as solution if this is the info you needed.