What is an Internal Modem?

The built-in modem is a computer expansion card that can be used by plugging into an expansion slot in the computer. It does not need to occupy the computer's serial port.

Built-in modem

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The built-in modem is a computer expansion card that can be used by plugging into an expansion slot in the computer. It does not need to occupy the computer's serial port.

The built-in modem is actually a computer expansion card, which can be used by plugging into an expansion slot in the computer. It does not need to occupy the computer's serial port. Its wiring is quite simple. Plug the telephone line connector into the "Line" jack on the card, and the other interface "Phone" on the card is connected to the phone. When the modem is not used, the use of the phone is not affected at all.

When installing the built-in modem, you need to disassemble the case, and you need to set the interrupt and COM port. The installation is more complicated. This modem occupies an expansion slot on the motherboard, but does not require additional power and cables, and is cheaper than an external modem.