Asus KGNH-D16 - Manual (Page 40)

2-22 Chapter 2: Hardware information
2. VGA controller setting (3-pin VGA_SW1)
This jumper allows you to enable or disable the onboard VGA controller. Set
to pins 1–2 to activate the VGA feature.
3. DDR3 voltage control setting (4-pin LVDDR3_SEL1; LVDDR3_SEL2)
These jumpers allow you to adjust the DIMM voltage. Use LVDDR3_SEL1
to adjust the DIMM voltage for CPU 1, and use LVDDR3_SEL2 to adjust the
DIMM voltage for CPU 2. Set to pins 1–2 to select +1.5V BIOS control, pins 2–
3 to select Force +1.2V, or pins 3–4 to select Force +1.35V .