3COM
ETHERLINK III 3C509B
| NIC Type | Ethernet | 
| Network Transfer Rate | 10Mbps | 
| Data Bus | 16-bit ISA | 
| Topology | Linear Bus | 
| Wiring Type | AUI transceiver via DB-15 port RG-58A/U 50ohm coaxial | 
| Boot ROM | Available (location unidentified) | 
 
| CONNECTIONS | |||
| Function | Label | Function | Label | 
| AUI transceiver via DB-15 port | CN1 | RG-58A/U 50ohm coaxial port | CN2 |