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A Male 9-pin Or 25-pin Port On A Computer System Used By Slower I/O Devices Such As A Mouse Or Modem. Data Travels Serially - One Bit At A Time - Through The Port. Serial Ports Are Sometimes Configured As Com1 - Com2 - Com3 - Or Com4. Also Called Db9 Port.

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1. A Male 9-pin Or 25-pin Port On A Computer System Used By Slower I/O Devices Such As A Mouse Or Modem. Data Travels Serially - One Bit At A Time - Through The Port. Serial Ports Are Sometimes Configured As Com1 - Com2 - Com3 - Or Com4. Also Called Db9 Port.





 
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