Serial interfacing is one of the most common protocols to make two electronic gadgets communicate. In such interfacings, the data is sent sequentially and bit bybit. RS232 is one sub type of serial interfacing that was introduced in the year 1932. Available in 9 pin and 25 pin configurations, RS 232 pins allow data exchanges at the maximum of 256kbps. Some well known applications of these connectors include linking modems to computers and other micro controller based UART electronic gadgets. Of course, such an interfacing would require different types of connectors; in this case, RS232 connectors are used. The Insight covers a conventional 9 pin female RS232 connector. Let’s find out the outer and inner details of it.