HP J4091A Installation And Reference Manual page 6

HP 100Base-T Hub 8 Installation and Reference Guide
8. Verify network communications by ensuring that:
you have made all the necessary connections
you can access any connected resources
the hub's indicators show link status
9. If you encounter any problems in installing the HP 100Base-T Hub 8,
refer to Chapter 2 for a detailed description of installation procedures,
Chapter 3 for sample configurations, or Appendix A for help in
troubleshooting.
Note: Refer to Chapter 2 for a more detailed description of calculating the maximum
cable length permitted between two end nodes for Fast Ethernet.
vi Quick Installation