D-Link DFE-2600 Series User Manual page 34

Dual-Speed Stackable Hubs User's Guide
This indicator lights continuously under the following two conditions:
1. A good connection has been established with a console (for example,
a PC or other computer). The diagnostic port of a DFE-2600 series
master hub must be connected to the console's RS-232 serial port
using a normal serial cable.
OR
2. The console computer is on-line and connected to the on-board con-
sole program either through terminal emulation or a TELNET
session.
Refer to Chapter 4, Making Connections, for directions on establishing a
connection with the diagnostic port, and Chapter 5, Master Hub Setup and
Management, for information about how to use the console interface.
22 Understanding Indicators