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"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Model: 1670
9 Data Bit 7 18-25 Signal Ground
* = Active low
Serial Connector
Connector Pin Signal
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
1
2
3
4
5
6
Data 1
Data 2
Ground
+5 V
Clock 1
Clock 2
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