The following describes how to create new or modify an existing serial port on a virtual machine. 

First, you have to set the emulation type using the PrlVmDev_SetEmulatedType function. The available types are:

• PDT_USE_REAL_DEVICE - real port.
• PDT_USE_OUTPUT_FILE - output file.
• PDT_USE_OTHER - socket.

Second, you must call the PrlVmDev_SetSysName and the PrlVmDev_SetFriendlyName functions. These functions are used differently depending on the emulation type that you chose in the first step. 

Real port 

1. Choose a real port and pass its ID to the PrlVmDev_SetSysName function.
2. Pass the physical port name to the PrlVmDev_SetFriendlyName function.

Output file

1. Choose an output file name and path, then pass it to both functions as a parameter.

Socket

1. Choose a socket name and path, then pass it to both functions as a parameter.
2. Call the PrlVmDevSerial_SetSocketMode function to set the socket mode.

Common Virtual Device Functions