Print to USB Thermal Printer (brand Zebra 3842)

Question

I have an application that prints to a Thermal Printer..These are the older printers (brand Zebra 3742) and uses the Serial Com Port 1 & 2. I have that working. We now have two new printers (brand Zebra 3842) but are USB. Now I have to write code to print to these USB printers but not sure where to start.

Using the system printing functions won't due because I had trouble sending the ELP Commands this way. I am still looking into this method to see if there is anything I can do different to make this work.
If can get one thing answered i think I may be able to start form there.

For my serial ports I have:

 
public SerialPort ComPort1 = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
public SerialPort ComPort2 = new SerialPort("COM2", 9600, Parity.None, 8, StopBits.One);

Is there an equivalent to this for the USB Port?

Any Help would be Appreciated!
Thanks