Yes you can, the manual says:
"Dual-Channel mode
In Dual-Channel mode, the memory modules can transmit and receive data with two data bus lines simultaneously. Enabling Dual-Channel mode can enhance the system performance. When you have two memory modules, please always insert them into the DIMM_A0 & DIMM_B0 (as way 2 shown in below)."
Donwload the manual.
PD: Great mobo.