Linksys EFAH05W-CA User Guide - Page 8

LED Indicators Power 100/10 Col 100 Link/Act FX1/FX2 SW (EFAH05 only) Indicates that the hub is receiving power. Indicates if collisions are being encountered at 100Mbps and/or 10Mbps. Some collisions are normal. If your network seems to be experiencing high collision levels, verify that your cabling is good, and that there are no cabling coils, cross-overs, or breaks. ON if a given port is operating at 100Mbps; OFF if the port is running at 10Mbps. ON or flickering if a given port is sending or receiving data; OFF if the port is not connected to a node. ON if the hub's optional expansion module is installed. Flickering when receiving or transmitting data. FX2 is on when a dual-port module is being used, FX1 is on when a single-port or dual-port module is being used, (rackmount models only). ON if uplink port is in 100Mbps/100 meter Distance Extender mode. 6