Asus RS520-E6/ERS8 - Manual (Page 49)

ASUS RS520-E6/ERS8 4-5
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. LAN controller setting (3-pin LAN_SW1, LAN_SW2)
These jumpers allow you to enable or disable the onboard Intel® WG82574L
Gigabit LAN1/2 controller. Set to pins 1–2 to activate the Gigabit LAN feature.