Biostar TF560 A2 Setup Manual page 12

Motherboard Manual
C. Dual Channel Memory installation
To trigger the Dual Channel function of the motherboard, the memory module
must meet the following requirements:
Install memory module of the same density in pairs, shown in the following
table.
Duual Channel Status DIMMA1
Enabled
Enabled
Enabled
(O means memory installed, X means memory not installed.)
The DRAM bus width of the memory module must be the same (x8 or
x16)
10
DIMMB1 DIMMA2
O O
X X
O O
DIMMB2
X X
O O
O O