Universal Serial Bus - HP Compaq Business Notebook nc8000 Maintenance And Service Manual

Connector Pin Assignments
Pin Signal
1 TX+ (ISDN modem)
2 TX- (ISDN modem)
3 Tip (modem)
Pin Signal
1 +5 VDC
2 Data –
A–2
Table A-2
RJ-11 Modem
Pin
4
5
6
Table A-3

Universal Serial Bus

Pin
3
4
Signal
Ring (modem)
RX+ (ISDN modem)
RX- (ISDN modem)
Signal
Data +
Ground
Maintenance and Service Guide