PrestonFFC

I currently have 2 monitors and only 1 hdmi port. I bought this splitter just to test it, turns out it's a pile of sh*t and wont work. 
Https://www.amazon.co.uk/dp/B07RPHYZWH/ref=cm_sw_r_cp_apa_i_faqEDbDG6K39P 
Anyone got a good, reliable splitter that simply duplicates the screen? Cheers

When you say adapt do you mean regarding the graphics card? I.e it wont work on a hdmi only graphics card? Or something else?

@dalekphalm Desktop Pc