Printer interfaces are the connections that allow a computer or other device to communicate with a printer. Common types of interfaces include USB, Wi-Fi, and Bluetooth. Each interface has its own advantages; for example, USB provides a direct connection for fast printing, while Wi-Fi allows for wireless printing from multiple devices. In addition to these physical connections, printer interfaces can also include software protocols that manage data transfer. Popular protocols include PostScript and PCL, which help ensure that the printed output matches what is displayed on the screen. Understanding these interfaces is essential for effective printing.