Asus Z9PR-D16 - Manual (Page 44)

2-24 Chapter 2: Hardware information
2. VGA controller setting (3-pin VGA_EN1)
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/ LAN_SW3/
LAN_SW4)
These jumpers allow you to enable or disable the onboard Intel ® 82574L
Gigabit LAN controllers. Set to pins 1-2 to activate the Gigabit LAN feature.