serial cable interface is mainly used as printer port in 25 needles d shape to 8 bits of data transmit lthaca pc board

interface type refers to the type of interface used between the printer and the computer, which can also indirectly reflect the speed of the printer's output speed. the main interface types for printer products in the market include common parallel interfaces and usb ports. the usb interface relies on its ability to support plugging and fast output,