AMD K3780E - Manual (Page 13)

Mainboard
9
Jumpers of I/O Board Type 1 ---
1.4.4 JP1: CF Card Master/ Slave Jumper
This Jumper is to select the CF works on Secondary Channel master device or Slave device.
JP2 Assignment
Pin 1-2 Closed
Slave
Pin 2-3 Closed
Master (Default)
1.4.5 JP2: LVDS VDD POWER
It’s for LVDS VDD power setting.
JP3 Assignment
Pin 1-2 Closed
VCC5V
Pin 2-3 Closed
VCC3P3V (Default)
1.4.6 CN1 - 6: RS-232 Voltage Setting
Pin Assignment Pin Assignment
1 RS232 2 VCC5V
3 RS232 4 RI (Default)
5 RS232 6 VCC12V