Question on Lesson 4 in Schematic&PCB

[tamito]

Currently, I work on footprint and 3D model of DIMM socket. According to the footprint, I find out that there should be no space between pin 39 and 41. It will look like in the blue circle. I fix the left side already.

My question is that there should be 204 pins. I saw only 200 pins with 4 extra pins for holds and pads. Should I add more 4 pins next to pin 200? What type of signal do we need? GND?

Thank you

[robertferanec]

tamito there are two kind of dimm sockets - 200 and 204 pins. You may want to double check your footprint or 3D model.