3COM CORPORATION
ETHERLINK III (3C509B-TPC)
| Card Type | Network Interface Card | 
| NIC Type | Ethernet | 
| Boot ROM | Not available | 
| Network Transfer Rate | 10/100 Mbps | 
| Topology | Star, linear bus | 
| Wiring Type | RJ-45 Unshielded twisted pair RG-58A/U 50ohm coaxial | 
| Data Bus | 16-bit ISA | 
 
| CONNECTIONS | |||
| Function | Label | Function | Label | 
| RJ45 connector | CN1 | BNC connector | CN2 | 
| DIAGNOSTIC LED(S) | |||
| LED | Color | Status | Condition | 
| LED1 | Unidentified | On | Network connection is good | 
| LED1 | Unidentified | Blinking | Polarity reversed | 
| LED1 | Unidentified | Off | Network connection is broken |