2-9
MS-98M9
Rear Panel I/O
USB 3.2
Gen 1
Ports
Mouse/Keyboard
Combo Port
COM Port
GbE
RJ45
Port
USB 3.2
Gen 1
Ports
10GbE
RJ45 Port
(Full SKU)
USB 3.2
Gen 1
Ports
GbE
RJ45
Port
10GbE
RJ45 Port
(Full SKU)
COM Port
h
RS-232/422/485 Serial Port
The serial port is a 16550A high speed communications port that sends/receives
16 bytes FIFOs. It supports barcode scanners, barcode printers, bill printers,
credit card machine, etc.
1
5
6
9
RS232
PIN
SIGNAL
DESCRIPTION
1
2
3
4
5
6
7
8
9
NDCD
NSIN
NSOUT
NDTR
GND
NDSR
NRTS
NCTS
0V/5V/12V
Data Carrier Detect
Signal In
Signal Out
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
Power Pin
RS422
PIN
SIGNAL
DESCRIPTION
1
2
3
4
5
6
7
8
9
422 TXD-
422 TXD+
422 RXD+
422 RXD-
GND
NC
NC
NC
NC
Transmit Data, Negative
Transmit Data, Positive
Receive Data, Positive
Receive Data, Negative
Signal Ground
No Connection
No Connection
No Connection
No Connection
RS485
PIN
SIGNAL
DESCRIPTION
1
2
3
4
5
6
7
8
9
485 TXD-
485 TXD+
NC
NC
GND
NC
NC
NC
NC
Transmit Data, Negative
Transmit Data, Positive
No Connection
No Connection
Signal Ground
No Connection
No Connection
No Connection
No Connection