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This topic describes the typical configuration of hardware, drivers, and device stacks for legacy serial devices that are connected to an RS-232 port.
The following diagram shows the typical configuration for a non-Plug and Play Toaster device.
.png "Diagram illustrating hardware and drivers-and-device-stacks configurations for a non-Plug and Play toaster device")
Serenum is not used to install a non-Plug and Play serial device. The installation of the Toaster device stack is device-specific. To communicate with the Toaster device, the Toaster driver opens the COM port that is associated with the RS-232 port.