Why does my Task Manager show i have 4 open RAM slots?

ram slot 2 and 4   Dan ramesses riches slot

Correct, they soldered no DDR4s on your MOBO , I have 1 DDR4 soldered on my MOBO not visible under my keyboard

so my task manager said 1 of 2 ram slots used, when i hover it saidslot 1: emptyslot 2: 4,0GB, 1600mhzbut it show 8gb of ram just finemy Things To Know Before Buying 4 Stick of RAM Hardware For Gamers•42K Can you mix 2

recensione slot roo riches 1 Because that's the way the slots are wired 1 & 3 on one channel, 2 & 4 on the other channel  Things To Know Before Buying 4 Stick of RAM Hardware For Gamers•42K Can you mix 2