Asus P9D-C/4L - Manual (Page 47)

ASUS P9D-C Series 2-27
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, LAN_SW3, LAN_SW4)
These jumpers allow you to enable or disable the onboard Intel
® I210AT Gigabit LAN
controllers. Set to pins 1-2 to activate the Gigabit LAN feature.
The jumpers LAN_SW3 and LAN_SW4 are available for P9D-C/4L only.