Motherboard connectors pinouts  > obsolete computers pinouts
The ATX Form Factor Card is used to upgrade AT motherboards to meet ATX standards and support PC97, PC98 specificatioin.
Numbering may be reversed on some motherboards. Check the key position first.
Something
Pin
Name Direction Description
1 USB +5V -?-  
2 USB Port 0 - -?-  
3 USB Port 0 + -?-  
4 GND -?-  
5 n/c -?-  
6 PS/2 Mouse CLK -?-  
7 GND -?-  
8 IR Receive -?-  
9 +5 V -?-  
10 USB +5V -?-  
11 USB Port 1 - -?-  
12 USB Port 1 + -?-  
13 GND -?-  
14 n/c -?-  
15 PS/2 Mouse DTA -?-  
16 GND -?-  
17 IR Receive -?-  
18 IR Transmit -?-  
Some reports are to swap mouse CLK and mouse DATA as this: Mouse DATA is 11 (6), CLK is 12 (15).


Alternative
Pin USB 1 USB 2 PS/2 Mouse Infrared
1+5V DC  " "
2 +5V DC  
3Data -   
4 Data -  
5Data +   
6 Data +  
7Ground   
8 Ground  
9  +5V DC 
10    
11  Mouse Clk 
12  mouse Data 
13   Ground
14  Ground 
15   IR Hi
16   Id in
17   +5V DC
18   IR Out

unknown connector
According to 3 reports in our database (2 positive and 1 negative) this pinout should be correct.

Is this pinout
Source(s) of this and additional information: comp.sys.cbm General FAQ v3.1 Part 7 from Hardware Book
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