Luggar CAT5e Patch Cord Cross Cable

Crossover cables should only be used for direct network connections. For the reason described above, attempting to connect a computer to an old router or network switch with a crossover cable instead of a normal cable, can prevent the link from functioning.
These cables can be specially purchased through various electronics outlets. Hobbyists and some IT professionals might prefer to make their own crossover cables instead.
A straight-through cable can be relatively quickly converted into a crossover cable by removing the connector and reattaching the wires with the appropriate transmit and receive wires crossed.