"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1683, 1685, 1687, 1688, and 1690

* = Active low

Serial Connector
Connector

 

Pin

 

Signal

 

 

 

 

 

 

 

1

 

Carrier Detect

 

 

2

 

Receive Data

 

 

3

 

Transmit Data

 

 

4

 

Data Terminal Ready

 

 

5

 

Signal Ground

 

 

6

 

Data Set Ready

 

 

7

 

Ready to Send

 

 

8

 

Clear to Send

 

 

9

 

Ring Indicator

 

 

 

 

 

Keyboard/Mouse

Connector

 

Pin

 

Signal

 

 

 

 

 

 

 

1

 

Data 1

 

 

2

 

Data 2

 

 

3

 

Ground

 

 

4

 

+5 V

 

 

5

 

Clock 1

 

 

6

 

Clock 2

 

 

 

 

 

file:///C/SERVICE%20MANUALS/COMPAQ%20_%20chec...01685%201687%201688%201690%201694/connec1.html (2 of 4)6/27/2004 2:57:32 AM