86 Appendix B: Technical information Matrox 
Pin | Signal  | I/O  | Description  | Form  | 
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  | Factor  | 
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20  | VID_IN9  | I  | Analog Video Input #9 or Y5  | PCI  | 
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21  | RTS  | O  | Request To Send   | PCI, CompactPCI  | 
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22  | RX  | I  | Receive   | PCI, CompactPCI  | 
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23  | VID_IN8  | I  | Analog Video Input #8 or Y4  | PCI  | 
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24  | USER(1)_OUT  | O  | Auxiliary User Output #1  | PCI, CompactPCI  | 
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GND  | -  | Ground.  | PCI, CompactPCI  | |
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33  | VID_IN11  | I  | Analog Video Input #11 or Y6  | PCI  | 
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34  | OPTOTRIG-  | I  | PCI, CompactPCI  | |
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35  | OPTOTRIG+  | I  | PCI, CompactPCI  | |
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36  | TX  | O  | Transmit   | PCI, CompactPCI  | 
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39  | USER(1)_IN  | I  | Auxiliary User Input #1  | PCI, CompactPCI  | 
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40  | VID_IN7  | I  | Analog Video Input #7 or C3  | PCI, CompactPCI  | 
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41  | VID_IN6  | I  | Analog Video Input #6 or Y3  | PCI, CompactPCI  | 
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42  | GND  | -  | Ground.  | PCI, CompactPCI  | 
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43  | VID_IN4  | I  | Analog Video Input #4 or C2  | PCI, CompactPCI  | 
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44  | VID_IN2  | I  | Analog Video Input #2 or C1  | PCI, CompactPCI  | 
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7, 10,  | Not used  | 
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  | PCI, CompactPCI  | 
12, 32,  | 
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37, 38  | 
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Use Matrox cable 
An 
■ Manufacturer:  | NorComp Interconnect Devices  | 
■ Connector & shell:  | HDT44P |