SRP-F310 is a front exit receipt printer adapting structure for preventing liquid infiltration and certified under the electrical protection level,IPX2 Class. SRP-F310 features a powerful inerface that goes beyond your imagination of what you are looking for in a receipt printer. It includes USB 2.0 Onboard for fast data transfer and USB host port for the use of WLAN dongle and Ethernet, which is sold separately at a high price.The four interfaces are provided as a built-in feature.All you have to do is choosing one between Serial and Parallel. One option here, BIXOLON Interactive Linker is an advanced printer option that allows users to add commands to four customizable buttons.(Receipt on demand, Cash drawer,Printint stop,Signal back to the host POS)