What do I need to hook up TM-T88IV to my computer

Well according to EPSON the ways you can connect your printer to a computer are RS-232C, IEEE 1284 parallel; RS-485; high-speed USB; 10/100Base-T/TX; wireless. However the way they get you is you have to buy the interface from them. Contact EPSON and see what the cheapest one is. If you're only using it from one computer just a simple parallel cable will do the trick. If you live in the Washington DC area feel free to contact me and if you send me a picture of the back of the printer I can tell you what kind of connection it is. I'm at http://www.inovagent.com