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ASUS Support Home Location : Forum > Motherboard > P5K-E  
  Topic : [Sharing]P5K-E serial port COM1 cable/pinouts New Topic
Posts : 1
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Tech Points : 0
From: Canada
Posted:3/5/2009 8:56:00 AM # 1
Here are the pinouts for the P5K-E motherboard COM1 connector (not in the manual):

IDC    DB9 Male
Pin 1    Pin 1    CD    
Pin 2    Pin 2    RXD    
Pin 3    Pin 3    TXD    
Pin 4    Pin 4    DTR
Pin 5    Pin 5    GND
Pin 6    Pin 6    DSR
Pin 7    Pin 7    RTS    
Pin 8    Pin 8    CTS
Pin 9    Pin 9    RI
Pin 10    N/A

There are two styles of cable. This one, the cable pin#'s line up but note IDC pin numbering zig-zags but the DB9 is in a row, so a straight ribbon connector DB9 does not work.

Check for continuity from DB9 pin 5 to PC ground.

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