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# THOMAS-CONRAD CORPORATION
TC4046
NIC Type Token Ring
Transfer Rate 4Mbps
Data Bus 16/32-bit MCA
Topology Ring
Wiring Type Shielded twisted pair
Unshielded twisted pair
Boot ROM Available
IMG IMG 1
+------------------------------------------------------------+
| CABLE TYPE |
|------------------------------------------------------------|
| Type | JP2 | JP3 | JP4 | JP5 |
|--------------------+----------+----------+--------+--------|
| » | Shielded | Pins 2 & | Pins 2 & | Pins 2 | Pins 2 |
| | twisted pair | 3 Closed | 3 Closed | & 3 | & 3 |
| | | | | Closed | Closed |
|---+----------------+----------+----------+--------+--------|
| | Unshielded | Pins 1 & | Pins 1 & | Pins 1 | Pins 1 |
| | twisted pair | 2 Closed | 2 Closed | & 2 | & 2 |
| | | | | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | DRAM | JP1 |
|-------------------+-------------------+--------------------|
| » | 128KB | (5) 4464 | Pins 2 & 3 Closed |
|---+---------------+-------------------+--------------------|
| | 512KB | (5) 44256 | Pins 1 & 2 Closed |
|---+---------------+-------------------+--------------------|
| | 2MB | (5) 441000 | Pins 1 & 2 Closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|-----+-------+--------+-------------------------------------|
| 1 | Red | On | Data is being received or |
| | | | transmitting data |
|-----+-------+--------+-------------------------------------|
| 1 | Red | Off | Data is not being received or |
| | | | transmitting data |
|-----+-------+--------+-------------------------------------|
| 2 | Green | On | Card is inserted into the ring. |
|-----+-------+--------+-------------------------------------|
| 2 | Green | Off | Card not is inserted into the ring. |
+------------------------------------------------------------+