Com3/4 Connector; Ps/2 Connector; Remote Switch Signal Connector - JHCTech KMDA-3820 User Manual

2.4.9 COM3/4 Connector

COM3/4 are only for RS232. The Pin assignments are as follows:

2.4.10 PS/2 Connector

The KMDA-3820 provides a PS/2 connector which is used to connect keyboard or mouse. Table 2.11 for
pin assignments.
Table 2.11:PS/2 Pin Assignments
Pin
1
2
3

2.4.11 Remote Switch signal Connector

For the remote switch signal interface of the switch machine, the terminal of the motherboard coastline is
Table 2.10: COM3/4 Serial Port Pin Assignments
Pin Signal
1 DCD
3 TxD
5 GND
7 RTS
9 RI
Signal
SIO_KDAT
SIO_MDAT
GND
Figure 2. 17
Pin Signal
2 RxD
4 DTR
6 DSR
8 CTS
Figure 2. 18
Pin Signal
4 VCC
5 SIO_KCLK
6 SIO_MCLK
20
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