Asus Z9PH-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. LAN controller setting (3-pin LAN_SW1, LAN_SW2)
These jumpers allow you to enable or disable the onboard Intel ® Intel
82574LGigabit LAN controllers. Set to pins 1–2 to activate the Gigabit LAN
feature.