ADLINK cPCI-3971 - Manual (Page 136)

122 BIOS Setup Utility
PCH-IO Configuration
LAN1, LAN2, VGA Output
Sets the LAN1/LAN2/VGA output to Front/Rear.
cPCI-3970G COM1/ 2 Output
Sets the cPCI-3970G COM1/2 mode. Options: RS232,
RS422/RS485.
Azalia HD Audio
The onboard HDA Controller. Set this value to Enable/Disable.
NOTE: NOTE:
The cPCI-3970G COM1/2 Output BIOS setting is only used for
cPCI-3970G/U models. The COM mode setting for
cPCI-3970D/P models must be set using the “COM1 Mode
Selection Switches (SW1~SW4)” on page 42.