New build compter only seams to work with RAM in DIMM-slot B1

Slot furthest away from your cpu, then skip one, then stick a dimm in and the one closest to your cpu is also empy? CPU - empty - dimm - empty -

DDR3 Memory Adapter Card 200 to 240Pin Laptop to Deskstop Memory Transfer Card for SO DIMM Slot for DDR3 204 pin Notebook DDR3 240 pin Desktop DIMM Male

dim slot in my design, witch of slot A and Slot B is Dimm #0 ? and witch of them is Dimm #1? let me know either Slot A should be placed furthest or

dimm slot DIMM physical id: 3 slot: ChannelB-DIMM1 Here in my system I have 4 memory slots in which currently I am using only one slot In