There is no other slot. I took the laptop apart..and thats it. just the slot it come out of. There is no a and b. just a. So thats why I was told to add the memory info in config.plist.. but i dont know how to do that. Here is all my memory info includion modules.
Module info:
DDR3
8GB
Single Channel
NB frequency: 2761.4 mhz
Dram frequency: 789.3 mhz
Row address bits: 16
Column address bits: 10
Number of banks: 8
Module density: 4096mb
Number of ranks: 2
Device width: 8 bits
Bus width: 64