Installation Instructions
EC3-1816CLD2NA
- 7 -
2.4 Jumper Setting
1.
JCC1: Clear/Keep CMOS Setting (Pitch: 2.0mm)
CMOS is powered by the button battery on board. Clearing CMOS will restore
original settings (factory default). The steps are listed as follows: (1) Turn off
the computer and unplug the power cable; (2) Instantly short circuit JCC1; (3)
Turn on the computer; (4) Follow the prompt on screen to enter BIOS setup
when booting the computer, load optimized defaults; (5) Save and exit. Please
set as follows:
Setup
Function
1-2 Open
Normal ((Default)
JCC1
1-2 Short
Clear the contents of CMOS and all BIOS
settings will restore to factory default values.
2.
JP1: AT/ATX Power-on Mode Selection (Pitch: 2.0mm)
Setup
Function
1-2 Open
AT power-on mode
JP1
2-3 Short
ATX power-on mode (Default)
3.
JP2
～
JP3: COM1 RS-232/ RS-485 Mode selection (Pitch: 2.0mm)
COM1 supports two operating modes: RS-232/RS-485. The mode selection can be
realized by setting JP2/JP3.
Mode Selection
Pin
Setting
RS-232
（
Default
）
RS-485
JP2 1-2 3-4
JP2, JP3
JP3
1-3
2-4
3-5
4-6
