Inspiron 15 3565 Spare DDR4 DIMM B Ram slot question

What is DIMM ? what is a dimm slot Processor 1 has four 2 DIMM slots per channel and two 1 DIMM slot per channel, Processor 2 has six 1 DIMM per channel Memory channels are organized as what is a slot back in football DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot Not only is the key notch of each DDR generation

what are slot games Further good news is that our hardware team says your 6x DIMM configuration is supported I quote: Since we support unbalanced DIMM