Ire_Pat,
The in ACT mode, the left LED shows link status (up/down). This should be constant so long as there is an active device attached to the port in question.
The in ACT mode, the right LED shows "network activity information". If these LEDs are all on for active ports for extended periods of time, then this may be an indication of high switch utilisation, or large amounts of broadcasts or multicasts across the network.
Are you experiencing network performance issues?
Regards,
Peter