This puts the printer in 'Vendor Class' mode as opposed to 'Printer Class' mode so when you connect the printer and switch it on Windows will not recognise it as a printer and we'll have to add it to the list of devices as a printer. In the set of 8 gently push number 1 and number 5 towards the numerals printed below, into the off position. When you remove this plate you'll see two sets of dip switches, a set of 4 and a set of 8. Underneath the printer is a small base plate fastened with a small Phillips screw as shown below. For this you'll need a small Phillips screwdriver.
The first step is to set the printers dip switches.
How to Setup The Star TSP650 USB Printer on Windows