This circuit diagram illustrates the wiring configuration for a cross-over CAT5 cable. CAT5 cables are commonly used for Ethernet networking and can be wired in two different configurations: straight-through and cross-over. A cross-over cable is used to connect two similar devices, such as two computers or two switches, without the need for a separate network hub or switch. In this setup, the wiring arrangement of the CAT5 cable is such that the transmit (TX) pins of one device are connected to the receive (RX) pins of the other device, and vice versa.
