Specification tables A-7Serial port addressesIBM computers have a built-in external serial port already installed in the computer.The connector for this port is located at the back of your computer. This port can beused to connect a serial mouse, serial printer, or other serial device and to transferdata between computers.The built-in serial port supports the following addresses and interrupts.Conflicts may arise if you add adapter cards with serial ports or if you change theaddress settings on your modem if you are using an operating system other thanWindows. You can resolve most of these conflicts by using Setup or the WindowsDevice Manager to change serial port addresses. See “Serial Port Setup” on page4-9 or “Resolving resource conflicts” on page 5-4 for more information.Table 6: Serial port addressesAddress COM# Interrupt Default2F8 COM2 IRQ 3 Serial port
