UPort 1150I LED description:
Name Color Description
Active Red Steady: The UPort is operational.
Off: Fault condition exists. There may be a problem with the converter, the
driver installation, or PC configuration.
TxD Green Blinking: Serial device is transmitting data.
RxD Yellow Blinking: Serial device is receiving data.
DTR, DSR,
RTS, CTS,
DCD
Red Steady: Require these signals to operate.
Off: Disable these signals to operate.