System Board Connector SpecificationsRefer to “System Board Layout” on page 5-2 for connector identification andlocation information.Monitor/SignalPin Signal Name I/O Pin Signal Name I/O1 Red Video O 8 Blue Ground2 Green Video O 9 +5 V dc3 Blue Video O 10 Synch Ground4 Monitor ID Bit 2 I 11 Monitor ID Bit 0 I5 Synch Ground 12 SDA I6 Red Ground 13 Horizontal Synch O7 Green Ground 14 Vertical Synch O15 SCL IParallel PortPin Signal Name I/O Pin Signal Name I/O1 Strobe O 14 Auto Feed N/A2 Data Bit 0 I/O 15 Error I3 Data Bit 1 I/O 16 Initialize O4 Data Bit 2 I/O 17 Select (In) O5 Data Bit 3 I/O 18 Ground Power6 Data Bit 4 I/O 19 Ground Power7 Data Bit 5 I/O 20 Ground Power8 Data Bit 6 I/O 21 Ground Power9 Data Bit 7 I/O 22 Ground Power10 Acknowledge I 23 Ground Power11 Busy I 24 Ground Power12 Paper Empty I 25 Ground Power13 Select O5-18

IBM Aptiva 2159 Manual