Serial (Select Models Only); Universal Serial Bus - HP ProBook 6550b Maintenance And Service Manual

Serial (select models only)

Pin
1
2
3
4
5
6
7
8
9

Universal Serial Bus

Pin
1
2
3
4
188 Chapter 8 Connector pin assignments
Signal
1 Data carrier detect
Received data
Transmitted data
Data terminal ready
Signal ground
Data set ready
Request to send
Clear to send
Ring indicator
Signal
+5 VDC
Data
Data +
Ground