Unpopulated dimm slot on laptop motherboard

Why are we putting RAM sticks into the 2nd and 4th slot first? ram slot 2 and 4 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 book red hot firepot slot Video 3: 1-2-3-4 configuration, post normally up until error D6 no console output devices are found which is completely expected as I had

rama slot So, at the moment I am only using one of my 8GB 3200mhz RAM Sticks in Slot 4 and the computer seems to be working fine and as normal The EZ