3COM ETHERLINK III 3C509B-COMBO NIC Type Ethernet Network Transfer Rate 10Mbps Data Bus 16-bit ISA Topology Linear Bus, Star Wiring Type Unshielded twisted pair AUI transceiver via DB-15 port RG-58A/U 50ohm coaxial Boot ROM Available (location unidentified) [Image] CONNECTIONS Function Label Function Label Unshielded twisted pair CN1 RG-58A/U 50ohm coaxial CN3 port port AUI transceiver via DB-15 CN2 port DIAGNOSTIC LED(S) LED Status Condition LED1 On Network connection is good LED1 Blinking Cable Polarity is reversed LED1 Off Network connection is broken Note: When you first install the adapter and power up the computer, the LED lights, but the network connection is not active. For the network connection to be good you need to run the Group 3 test or have loaded the network drivers.