Hisense HK570 User Manual page 25

6.COM
Description
COM
4x COM，COM3-COM4
connector type
standard
COM1-COM2RJ48
COM3 RJ48
COM pin
COM1-COM3 DB9
COM1-C0M2 DB9
1 NC 2
3 DSR 4
5 RTS 6
7 CTS 8
9 GND 10
1 NC 2
3 DSR 4
5 RTS 6
7 CTS 8
9 GND 10
1 DCD 2
3 TXD 4
5 GND 6
jumper selectable 5V/12V（1A）/RI，other
DCD
RXD
TXD
DTR
RI
DCD
RXD
TXD
DTR
RI/5V/12V
RXD
RTD
DSR