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Maintenance & Service Guide
Presario 1660 Model

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Connector Pin Assignments

This appendix provides connector pin assignment tables for Compaq Presario 1660 Model Portable Computers. For more information on connectors, refer to the section on Rear Connectors.

NOTE:  The signals in all tables of this appendix are considered active high unless otherwise indicated by an asterisk (*).

 

Parallel Connector

Parallel Connector

Pin Signal Pin Signal
1 Strobe* 10 Acknowledge*
2 Data Bit 0 11 Busy
3 Data Bit 1 12 Paper Out
4 Data Bit 2 13 Select
5 Data Bit 3 14 Auto Linefeed*
6 Data Bit 4 15 Error*
7 Data Bit 5 16 Initialize Printer*
8 Data Bit 6 17 Select In*
9 Data Bit 7 18-25 Signal Ground
* = Active low

 

Serial Connector

Connector Pin Signal
Serial Connector 1
2
3
4
5
6
7
8
9
Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator

Keyboard/Mouse

Connector Pin Signal
Keyboard/Mouse Connector 1
2
3
4
5
6
Data 1
Clock 2
Ground
+5 V
Clock 1
Data 2

 

External VGA Monitor

Connector Pin Signal
External VGA Monitor Connector 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Red Analog
Green Analog
Blue Analog
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
Not connected
Ground
Monitor Detect
DDC2B Data
Horizontal Sync
Vertical Sync
DDC2B Clock

 

Universal Serial Bus

Connector Pin Signal
Universal Serial Bus Connector 1
2
3
4
+5V
Data -
Data +
Ground

 

Modem

Connector Pin Signal
Modem Connector 1
2
3
4
5
6
Unused
Unused
Tip
Ring
Unused
Unused

 

Port Replicator

port replicator

Pin Signal Pin Signal Pin Signal Pin Signal
1 N.C. 21 Printer Data 0 41 N.C. 61 CTS
2 N.C. 22 Printer Data 1 42 N.C. 62 DCD
3 Kb Clk 1 23 Printer Data 2 43 Switch A 63 DSR
4 Joystick Data A 24 Printer Data 3 44 Switch B 64 TXD
5 Kb Data 1 25 Printer Data 4 45 Switch C 65 RTS
6 Joystick Data B 26 Printer Data 5 46 Switch D 66 N.C.
7 Kb Clk 2 27 Printer Data 6 47 N.C. 67 Detect
8 Joystick Data C 28 Printer Data 7 48 MIDI In 68 N.C.
9 Kb Data 2 29 USB 0 - 49 MIDI Out 69 V. Sync
10 Joystick Data D 30 USB 0 + 50 +5V 70 Ground
11 Lp Select In 31 USB 1 - 51 +5V 71 H. Sync
12 Lp Paper End 32 USB 1+ 52 N.C. 72 Ground
13 Lp Initialize 33 Adapter In 53 N.C. 73 Blue
14 Lp Busy 34 Adapter In 54 N.C. 74 Ground
15 Lp Error 35 Adapter In 55 N.C. 75 Green
16 Lp Ack 36 Adapter In 56 Dock ID - 76 Ground
17 Lp Auto Feed 37 Adapter In 57 RXD 77 Red
18 Lp Strobe 38 Adapter In 58 Lp Select 78 Ground
19 DDC2BC 39 N.C. 59 RI 79 N.C.
20 DDC2BD 40 N.C. 60 DTR 80 N.C

 

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Revised: 15 January 1999