[nomadking]

Try Googling "Epson printer dsub rj45" and see if your model appears in the results.
Eg DM-D110/DM-D210
Or "80LUS driver"

Epson Website, POS Drivers etc

ePOS-Print XML is the Epson original control command system for POS printers and customer displays
defined in XML. With ePOS-Print XML commands, you can print in environments where http communication
is available and from OS applications. For detailed information about ePOS-Print XML, see the ePOS-Print
XML User's Manual.

EPSON Advanced Printer Driver Windows printer driver that can display on the customer display.
TM Virtual Port Driver Use when controlling ESC/POS commands using a serial (USB controlled) connection. This driver recognizes the customer display connected to the TM printer as a virtual serial port.
DM-D Virtual COM Port Driver Use this for the USB connection. This driver recognizes the customer display connected to the USB as a virtual serial port. This driver is already installed in the TM intelligent printer's TM-DT
series.

You can obtain software and manuals from one of the following URLs.
For customers in North America, go to the following web site and follow the on-screen instructions.
http://www.epson.com/support/
For customers in other countries, go to the following web site:
http://download.epson-biz.com/?service=pos