Dell DR4300e Owner's Manual page 75

Figure 17. Memory socket locations
Memory channels are organized as follows:
Table 29. Memory channels
Process Channel 0
or
Process Slots A1, A5, and A9
or 1
Process Slots B1, B5, and B9
or 2
The following table shows the memory populations and operating frequencies for the supported
configurations:
Channel 1
Slots A2, A6, and A10
Slots B2, B6, and B10
Channel 2
Slots A3, A7, and A11
Slots B3, B7, and B11
Channel 3
Slots A4, A8, and A12
Slots B4, B8, and B12
75