Serial Port Monitoring Control - ActiveX Component Library for RS232 Data Monitoring, API for Software Developers
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DeviceType Enumeration

SymbolValueDescription
DEVICETYPE_UNKNOWN0x00000000The type of the device is unknown.
DEVICETYPE_PORT0x00000001The device is a standard serial communication port.
DEVICETYPE_MODEM0x00000002The device is a standard modem.
DEVICETYPE_BOTH0x00000003The device behaves as a communication port and as a modem.