HP EXPANSION BASE 344524-001 - Manual (Page 53)

A–2 Maintenance and Service Guide
Connector Pin Assignments
Table A-2
RJ-11 Modem
Pin Signal Pin Signal
1 Unused 4 Unused
2 Tip 5 Unused
3 Ring 6 Unused
Table A-3
Universal Serial Bus
Pin Signal Pin Signal
1 +5 VDC 3 Data +
2 Data – 4 Ground