We have a customer that wanted to save money so bought a couple Epson receipt printers online. There are no instructions with either of them so really trying to figure out what is what. One printer is a Epson TM-T88IV; it came with a serial code to cat 5 cable; it also has a port that says "Host" that is an RJ45; a 9 pin serial port that says "Fiscal" and a USB port along with 1/2 buttons. We tried to connect the printer via USB but no matter the drivers we used - it would say Printer Not Available.
The other printer is an Epson TM-T88V which only has a RJ45 port on it; no USB. Our question is this - what is the difference between these two printers and should we connect via plugging them into a network switch? Both systems are Win 7 with I3 processors - 64bit. Thoughts?