COM19

COM19 is a designation that appears in several independent contexts. In computing, it most commonly refers to a serial communications port identified as COM19 by the operating system. Serial ports, historically standardized by RS-232, are used to connect peripherals such as modems, mice, or industrial devices. The numeric label is assigned by device drivers or firmware and can correspond to physical hardware or to a virtual port provided by software. In Windows environments, applications typically open a port by its name, such as COM19, or via a device path like \\.\COM19. Port settings (baud rate, data bits, parity, stop bits, and flow control) are configured per device, and the port's behavior depends on the installed drivers and connected hardware.

Beyond computing, COM19 is used as an alphanumeric code in various organizational schemes. Some organizations use 'COM' as an abbreviation for a conference, committee, or module, with '19' indicating the edition or year. Because 'COM' is widely used and '19' is a common ordinal, the exact meaning of COM19 is context dependent and can refer to a specific event, standard, or product in different domains.

In practice, to determine the intended meaning, consult the source documentation or metadata accompanying the term. Without context, COM19 alone is ambiguous. See also: serial ports, RS-232, device naming conventions.