Diagnostic LEDs ************************************************************ ** ** ** Functions of the Diagnostics LEDs ** ** ** ************************************************************ LNK: Indicates the adapter is connected to a hub or switch and is receiving link pulses. If the LNK light isn't on, check all connections at the adapter. Make sure the hub or switch is transmitting at the correct speed and the drivers are loaded. ACT: Indicates transmit and receive activity. 100: Indiacates the NIC is operating a 100Mbps linespeed. Note: This LED only illuminates when a driver is loaded. FD: Indicates the NIC is in full duplex mode. Note: This LED only illuminates when a driver is loaded.