User manual

V270 Motherboard User Manual
14
2.5.3 J6: Inverter Power connector
2.5.4 J4: COM2/COM3 serial Ports
The J4 serial port, which provides dual RS-232 function.
Pin No. SYMBOL
1 +12V
2 +12V
3 +12V
4 GND
5 Black Light Control
6 GND
7 Black Light EN 5V
Pin No. SYMBOL Pin No. SYMBOL
20 GND 19 GND
18 FK NRI2 17 FK NDTR2
16 FK NCTS2 15 FK NSOUT2
14 FK NRTS2 13 FK NSIN2
12 FK NDSR2 11 FK NDCD2
10 GND 9 GND
8 FK NRI1 7 FK NDTR1
6 FK NCTS1 5 FK NSOUT1
4 FK NRTS1 3 FK NSIN1
2 FK NDSR1 1 FK NDCD1