RS-232 and other serial ports and interfaces  > obsolete computers pinouts
Pin Name Dir Description
1SHIELD---Shield Ground
2TXD-->Transmit Data
3RXD<--Receive Data
4RTS-->Request to Send
5CTS<--Clear to Send
6DSR<--Data Set Ready
7GND---System Ground
8CD<--Carrier Detect
9+12V-->+12 Volts DC (20 mA max)
10-12V-->-12 Volts DC (20 mA max)
11AUDO-->Amiga Audio Out (Left)
12n/c-Speed Indicate
13n/c- 
14n/c- 
15n/c- 
16n/c- 
17n/c- 
18AUDI<--Amiga Audio In (Right)
19n/c- 
20DTR-->Data Terminal Ready
21n/c- 
22RI<--Ring Indicator
23n/c- 
24n/c- 
25n/c- 
25 pin D-SUB male connector layout
25 pin D-SUB male connector
at the computer
25 pin D-SUB female connector layout
25 pin D-SUB female connector
at the cable
According to 1 reports in our database (1 positive and 0 negative) this pinout should be correct.

Is this pinout
Source(s) of this and additional information: Amiga 4000 User"s Guide from Commodore, from Hardware Book
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