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2. COM (hardware interface) - Wikipedia

   en.wikipedia.org/wiki/COM_(hardware_interface)

   Today, few consumer-grade PC-compatible computers include COM ports, [3] though some of them do still include a COM header on the motherboard. [4] After the RS-232 COM port was removed from most consumer-grade computers, an external USB-to-UART serial adapter cable was used to compensate for the loss. A major supplier of these chips is FTDI.

3. Direct cable connection - Wikipedia

   en.wikipedia.org/wiki/Direct_cable_connection

   A Direct Cable Connection dialog box on Windows 95. Direct Cable Connection (DCC) is a feature of Microsoft Windows that allows a computer to transfer and share files (or connected printers) with another computer, via a connection using either the serial port, parallel port or the infrared port of each computer.

4. ThinkCentre M series - Wikipedia

   en.wikipedia.org/wiki/ThinkCentre_M_series

   PC World called the M52 desktop, "A corporate machine for the security conscious business user looking for stability and reliability". [4] The M52 desktop was equipped with a 3 GHz Pentium 4 processors, an 80 GB hard disk drive, up to 4 GB of RAM, eight USB 2.0 ports, two serial ports, a Gigabit Ethernet connection, VGA output, and a chassis ...

5. Serial port - Wikipedia

   en.wikipedia.org/wiki/Serial_port

   A male D-subminiature connector used for an RS-232 serial port on an IBM PC compatible computer along with the serial port symbol. A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. [1]

6. RS-232 - Wikipedia

   en.wikipedia.org/wiki/RS-232

   For example, on the original IBM PC, a male D-sub was an RS-232-C DTE port (with a non-standard current loop interface on reserved pins), but the female D-sub connector on the same PC model was used for the parallel "Centronics" printer port. Some personal computers put non-standard voltages or signals on some pins of their serial ports.

7. Device driver - Wikipedia

   en.wikipedia.org/wiki/Device_driver

   At a lower level, a device driver implementing these functions would communicate to the particular serial port controller installed on a user's computer. The commands needed to control a 16550 UART are much different from the commands needed to control an FTDI serial port converter, but each hardware-specific device driver abstracts these ...