Asus MAXIMUS V GENE - Manual (Page 27)

Chapter 2
Recommended memory configurations
Install one memory module in slot A2 first as a single-channel operation.
2.2.4 System memory
The motherboard comes with four Double Data Rate 3 (DDR3) Dual Inline Memory
Modules (DIMM) slots.
A DDR3 module is notched differently from a DDR or DDR2 module. DO NOT
install a DDR or DDR2 memory module to the DDR3 slot.
ROG MAXIMUS V GENE 2-5