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# 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)
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------------+-------+----------------+-------|
| Unshielded twisted pair | CN1 | RG-58A/U 50ohm | CN3 |
| port | | coaxial 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. |
+------------------------------------------------------------+