![]() For example, computer first used DB25 connector as its serial and parallel port when PC serial port started to use DE9 D-sub 9-pin connector. In addition, DB9 connector is DE9 D-sub 9-pin connector, just incorrectly called "DB9" connector, where E is the size of the shell. DB9 is the smallest model of D-Subminiature connector, DB9 female connector has 9 pin holes, while DB9 male connector is 9 pins. In fact, DB9 connector is a common electrical connector, is one of the common D-Sub type of connectors. Many people do not understand what is DB9 connector. What is DB9 connector and what are the applications of DB9 female and male connectors? IV Is serial cable directly connected or crossed? ![]() III How to test the quality of the serial port cable? This article will focus on the definition and test method of DB9 connector port and introduce DB9 port in detail.ΔΆ.3 Computer video output, game controller port DB9 connector s are commonly used in serial communication.
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