USB-B is a type of connector commonly used for devices like printers and external hard drives. It has a square shape with beveled corners, making it easy to identify. This design helps ensure that the cable can only be plugged in one way, preventing damage to the port or the device. The USB-B connector is part of the broader USB (Universal Serial Bus) standard, which allows for data transfer and power supply between devices. While newer connectors like USB-C are becoming more popular, USB-B remains widely used in many peripherals, providing reliable connections for everyday technology.