Jp1: Clear Cmos Contents; Jp2, Jp3, Jp4: Rs232/422/485 (Com2) Selection; Jp6: 82551 10/100Mb Lan Enable/Disable - Intel IB850 User Manual

INSTALLATIONS

JP1: Clear CMOS Contents

Use JP1, a 3-pin header, to clear the CMOS contents. Note that the
ATX-power connector should be disconnected from the CPU card before
clearing CMOS.
JP1

JP2, JP3, JP4: RS232/422/485 (COM2) Selection

J4, COM1 is fixed for RS-232 use only.
J5, COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
Function
(pin closed)

JP6: 82551 10/100Mb LAN Enable/Disable

12
Setting
Pin 1-2
Short/Closed
Pin 2-3
Short/Closed
COM2
RS-232
JP2:
1-2
Jumper
Setting JP3:
3-5 & 4-6
JP4:
3-5 & 4-6
JP6
IB850 User's Manual
Function
Normal
Clear CMOS
RS-422
JP2:
3-4
JP3:
1-3 & 2-4
JP4:
1-3 & 2-4
Function
Enable LAN
Disable LAN
RS-485
JP2:
5-6
JP3:
1-3 & 2-4
JP4:
1-3 & 2-4