Clear Cmos (Jp1); At/Atx Power Mode Select (Jp2); Com1 Rs-232/422/485 Mode Select (Jp3, Jp4, Jp5) - AXIOMTEK MANO310 Series User Manual

MANO310 Mini ITX Motherboard
2.3.1

Clear CMOS (JP1)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing the
CMOS RTC RAM data. The onboard button cell battery powers the RAM data in CMOS,
which includes system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper clip from pins 1-2 (default) to pins 2-3. Keep the clip on pins 2-3
for about 5~10 seconds, then move the clip back to pins 1-2.
4. Re-install the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the <Del> key during the boot process and enter BIOS setup to re-enter
data.
Function
Normal operation (Default)
Clear CMOS
2.3.2

AT/ATX Power Mode Select (JP2)

This 3-pin (pitch=2.54mm) jumper allows you to select AT or ATX power mode.
Function
ATX mode (Default)
AT mode
2.3.3

COM1 RS-232/422/485 Mode Select (JP3, JP4, JP5)

Use these jumpers (3x2-pin pitch=2.54mm) to set COM1 port to operate as RS-232,
RS-422 or RS-485 communication mode.
Function
RS-232 mode
(Default)
RS-422 mode
RS-485 mode
10
Setting
1-2 close
2-3 close
Setting
1-2 close
2-3 close
Setting
JP3 1-2 close
JP4 3-5, 4-6 close
JP5 3-5, 4-6 close
JP3 3-4 close
JP4 1-3, 2-4 close
JP5 1-3, 2-4 close
JP3 5-6 close
JP4 1-3, 2-4 close
JP3 JP4
Board and Pin Assignments
JP5