The terms "TX" and "RX" are commonly associated with data transmission in networking and communication. Here's a brief explanation of each:

1. TX (Transmit): This refers to the side of a communication link or device that is responsible for sending data. For example, if you are connecting a device to a switch or router, you would typically connect the "TX" port of one device to the "RX" (Receive) port of the other device.

2. RX (Receive): This refers to the side of a communication link or device that is responsible for receiving data. In the context of connecting devices, you would connect the "RX" port of one device to the "TX" (Transmit) port of the other device.

When deciding which port to use (TX or RX), you need to ensure that you are connecting the transmitting end of one device to the receiving end of the other device. This ensures that data flows in the correct direction between the devices.

For example:

• If you are connecting a computer to a switch, you would typically connect the computer's "TX" port to the switch's "RX" port.

• If you are connecting two switches, you would connect the "TX" port of one switch to the "RX" port of the other switch.

Always refer to the documentation of the devices you are connecting to determine which ports are designated for transmitting (TX) and receiving (RX). Using the correct ports ensures proper communication and data flow between devices.