Laptop RAM Upgrade - 4 GB soldered + one empty slot

Laptop RAM Upgrade - 4 GB soldered + one empty slot ram slot 2 and 4 Correct, they soldered no DDR4s on your MOBO , I have 1 DDR4 soldered on my MOBO not visible under my keyboard ram slot 2 not working For best RAM performance, you should only install identical RAM -same brand, model, and capacity So, rather than fitting one 8GB and one 4GB

ram slot 2 not working 2 USB ports; 2 USB ports Raspberry Pi standard 40 pin GPIO header Micro-SD card slot for loading operating system and data storage; 5V DC

ramses rising slot 1 Because that's the way the slots are wired 1 & 3 on one channel, 2 & 4 on the other channel  Ok, i tried putting 4 sticks in the slots 2, 3, 4, and 5 wouldn't boot Is this supposed to happen? To anyone else in the future with this