Print width up to 112mm the ct s4000 offers 3 different paper width 80 82 5 and 112mm all on standard thermal paper or labels usb is default in addition to serial and parallel interface boards this makes the ct s4000 a future proof investment dual interface usb is default in addition to serial or parallel interface boards this makes the ct s4000 a future proof investment internal power supply pos printers from citizen offer an internal power supply the ct s4000 has a detachable one on