The Epson TM-T82II USB+Parallel POS Printer is a thermal printer used to print receipts and KOTs. The data cable connects the parallel port on the computer to the parallel adapter card on the printer. There is also USB connector for this printer. To print receipts / KOT from your desktop billing software, install the printer drivers, do the setup as shown here. You can also use this printer from a compatible mobile or tablet POS.