Maximum RAM supported

[KrillyManilly]

So I'm wanting to upgrade my ram on my HP Envy 750-424 pc but am unsure exactly how much and what type is supported for my motherboard. I have seen multiple conflicting specs. My motherboard is an HP ipm17-od2 (or possibly dd2... its hard to tell because of how similar they look). From what I've found on hp's specs for it, it says only 16gb max but I've seen 32gb and 64gb on two other sites. Also, the Odense2-s (which is what HP says my computer has) is blue, when mine is green. I've attached the two pictures below. I really hope someone can help with this because I'd like to upgrade to 32gb of ram if possible and just want to make sure I get the right type across the board. Thanks in advance!

Also, Here is the link to one of the websites that says it can support up 64gb  https://www.empowerlaptop.com/p/hp-862992-001/My MotherboardThe one HP says my computer has

[Paul_Tikkanen]

Hi:

According to the Crucial memory report for your PC, you can install 2 x 16 GB.

https://www.crucial.com/compatible-upgrade-for/hp---compaq/envy-750-424

The Skylake chipset and processor your PC has support 64 GB of memory, but that is with a motherboard that has 4 memory slots.

I would get the DDR4-2400 memory because the processor your PC has can only run the memory at 2133 MHz.

As it is, the 2400 MHz memory is going to downclock to 2133 MHz.