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Types of Cables and its ports

RS-232

An RS-232 serial port was once a standard feature of a personal computer, used for connections to modems, printers, mice, data storage, uninterruptible power supplies, and other peripheral devices.
RS-232C 

 RS-232 stands for Recommend Standard number 232 and C is the latest revision of the standard. The serial ports on most computers use a subset of the RS-232C standard. The full RS-232C standard specifies a 25-pin "D" connector of which 22 pins are used.


RJ-45

The RJ-45 style connectors and ports are also commonly found on Ethernet, serial and ATM IMA cards and interfaces. ... These are commonly referred to as Ethernet.




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