serial port

send beep back to scanner by Serial DS2278

I Need to send an incorrect beep to the scanner/and Flash red LED .
I have the scanner connected by SSI over USB CDC. so it is connected to the com11
question is SSI works without any other app? i mean if i send the command by a serial.wrtieBytes should it work with the scanner?

LinkOS SDK and printing via the serial port. C#

New to C# coding.
Does the LinkOS SDK provide any help for printing directly to the serial port?

I have found the GitHub code samples that covers USB and TCPIP printing but before i doing all the code for sending the ZPL to the serial port, i thought i would see if i could use the SDK.