Removing the 3C509B NIC Software 5-9
Removing the 3C509B NIC Software
The 3C509B software includes a program that removes
the 3C509B software.
To run the uninstall program, at the DOS prompt, type:
un3c509.exe [Enter]
The program removes the 3C509B software.
Crossover Cable Troubleshooting Tips
When you work with 10BASE-T cabling, concentrators,
and NICs from different vendors, it is possible to connect
everything and still have no communication between
file servers and workstations.
When there are several unknown variables, it is difficult
to determine which component is broken.
1 Determine whether your equipment complies with
the 10BASE-T standard.
This is particularly important for concentrators (hubs or
repeaters). Although the two specifications may appear
similar, small differences can cause a network
malfunction.
2 Connect a straight-through cable from the PC to
the hub.
The hub performs an internal crossover so that the signal
can go from TD+ to RD+ and TD– to RD–. When you look
at an RJ-45 connector from the front (that is, the opposite
side from where the wires enter the connector), pin 1 is
identified on the right-hand side when the metal contacts
are facing up.
3 Make sure that the TD+ and TD– wires are twisted
together, and that the RD+ and RD– wires are
twisted together.
Using wires from opposing pairs can cause signals to
be lost.
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