Serial port connectors (cn4 and cn5), Keyboard and mouse connectors (cn7 and cn6), A-12 – Epson 4000 User Manual
Page 127: Serial port connector pin assignments, A-12 specifications, Keyboard and mouse connector pin assignments
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Serial Port Connectors (CN4 and CN5)
Serial port connector pin assignments
Pin
Signal
Pin
Signal
1
Data carrier detect
6
Data set ready
2
Receive data
7
Request to send
3
Transmit data
8
Clear to send
4
Data terminal ready
9
Ring indicator
5
Ground
Keyboard and Mouse Connectors (CN7 and CN6)
Although the keyboard and mouse connectors are physically
identical, they cannot be used interchangeably.
Keyboard and mouse connector pin assignments
Pin
Signal
Pin
Signal
1
Data
4
+5 VDC
2
Reserved
5
Clock
3
Ground
6
Reserved
A-12 Specifications
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