B&B Electronics USOTL4 USB To RS-422 485 Adapter

The B&B Electronics USOTL4 USB to RS-422/RS-485 adapter is a compact USB-to-serial bridge that adds an RS-422/RS-485 port to a USB-equipped computer or controller. It uses a USB Type-B connector on the host side and a detachable terminal block on the serial side, supporting RS-422 four-wire operation and RS-485 two- or four-wire configurations with a single device. The interface delivers RS-422/RS-485 data up to 921.6 kbps and communicates over USB 2.0 Full Speed (12 Mbps). The unit is USB bus-powered, so no separate power supply is required for typical desktop or laptop use. The removable terminal block accepts 12–28 AWG conductors, making it suitable for field wiring and industrial environments. This converter is part of B&B’s Ulinx family of USB-to-serial products and is designed for straightforward installation in PLCs, sensors, motor drives, CNCs, and other equipment that relies on RS-422/RS-485 serial communication. The USOTL4 provides a compact footprint for panel or bench applications and a durable USB connection designed to resist disconnects during operation.