A modem that plugs into an expansion slot within the computer. Unlike an external modem, an internal modem does not provide a series of display lights that inform the user of the changing modem ...

While there's no shame in that, having a basic understanding of how your Wi-Fi works ... and your computer need another way to access the web and get online. That's where your home's modem comes ...

There’s a hidden port in this machine for a modem card, but Apple never made one. While other Newton aficionados trudge along with old PCMCIA WiFi cards ... There’s an internal serial port ...