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2. USB can install a comport. (it will be uninstalled when the USB is removed automatically. That's how USB works.) 3. Don't know the exact number, but it can go up to 40 for sure.– LPChipCommented May 7, 2020 at 9:37
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2. When we install a USB, how is the new COM port number assigned? Is it done by the USB or the HOST PC?– FreshmanCommented May 7, 2020 at 9:40
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Moreover, how do we get so many number of COM ports (as you say around 40), When we don't have that many physical serial ports or USB ports present? Any multiplexing or usage of USB-UART bridge?– FreshmanCommented May 7, 2020 at 9:43
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both. The USB has an id number, and queries for a free comport to use that one. If you plugin the USB to the same port, you usually get the same comport, but its not a guarantee.– LPChipCommented May 7, 2020 at 9:43
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just because you don't have that many ports, doesn't mean windows can't support them. And with USB, virtual comports is an option. With many usb hubs connected to a pc, you can get to 40 comports if you really want to.– LPChipCommented May 7, 2020 at 9:44
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