IEI Technology NOVA-8890, Руководство пользователя, Страница: 11 / 49

11
2.4 Clear CMOS
To clear the CMOS data, close the JP2 (2-3) for about 3 seconds, then open it
again.
• JP2: Clear CMOS (Reserved Function)
JP2 DESCRIPTION
1-2 Normal Operation
2-3 Clear CMOS Setup
WARNING:
When you change the power supply between ATX and AT, clear CMOS (Power
On) first. Otherwise, the CPU Board may fail to boot.
2.5 Onboard Keyboard/Mouse Power Source
Setting
JP11 DESCRIPTION
1-2 +5V
2-3 +5VSB
2.6 COM2 RS232/RS422/RS485
COM2 RS232/RS422/RS485 mode Selection & Voltage Output (PIN11)
Setting
• JP9: To set the operating mode of COM2.
JP9 DESCRIPTION
1-2 RS232
2-3 RS422/485
• JP14: To set the operating mode of COM2.
JP14 DESCRIPTION
1-2 RS422
2-3 RS485
• JP6: To select the function of pin 11 at COM2, you can set this pin to
provide RI, 5V or 12V power source.
JP6 COM2 PIN8
(1-3) (2-4) +5V
(3-5) (2-4) +12V
(1-3) (4-6) RI