3Com EISA 10/100BASE-T User Manual page 57

5-12 C 5: P T D T
HAPTER ERFORMING ROUBLESHOOTING AND IAGNOSTIC ESTS
If you experience any problems, first make sure that the
appropriate driver is loaded, that the proper cable is
connected to the adapter port, and that the hub complies
with the adapter specifications (10 Mbps 10BASE-T or
100 Mbps 100BASE-TX). Then recheck the LED.