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COM port

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  • COM port

    i have 600 celeron computer with bultin COM port, i want to use its COM port for serial communication via wireless internet, it does not work, even it is installed, i have check in BIOS, it is AUTO/ENBALE, I have re-installed windows, but in vain, I have remove these ports and windows installed again. i have use serial mouse to check it but in vain. what will be the problem? how can i troubleshout it?How can i repair it if it is out of order?
    what abt extenal PCI slot COM port card? Will it work fine?