What are serial ports and serial cables?

A serial cable is a cable used to transfer information between two devices using a serial communication protocol. The form of connectors depends on the particular serial port used. A cable wired for connecting two DTEs directly is known as a null modem cable.

What is USB serial cable?

The U209-000-R USB-to-Serial Adapter Cable allows you to connect a 9-pin RS-232 serial device to a computer or laptop with a USB Type-A port. It works with modems, digital cameras, PDAs, ISDN terminals and other devices with a serial port.

Is RJ45 a serial port?

The RJ45 port you are referring to is an Ethernet port, not a serial port. If you are looking for a more current technology, you should investigate the USB interface.

What is a RS-232 port?

RS-232 (or Recommended Standard 232) is a standard computer communications system that’s more commonly known as a serial connection. You can also find RS-232 ports on the back of many advanced A/V receivers, where they can be used to connect the receiver to a PC for upgrading the software system within the receiver.

What is the difference between RS-232 and Ethernet?

Ethernet is a type of serial communication. There are many differences between Ethernet and other serial protocols though. The voltage levels and cable impedances are different but the primary difference is that Ethernet is an intelligent communication while RS422, RS232 are not.

What is RJ45 serial console port?

The console port is an RS-232 serial interface that uses an RJ-45 connector to connect to a management device such as a laptop or a desktop PC.

How do I convert RJ45 console to RJ45?

Instructions to Wire an RJ-45 Console Cable

Remove the screws on the cover of the DB9-to-RJ45 adapter kit and then remove the cover from the RJ45 connector.
Plug the wires that extend from the RJ45 connector into the back of the DB9 connector according to the pinout below: