Allen-Bradley 9300-USBS Remote Access USB to RS-232 Serial Adapter

The Allen-Bradley 9300-USBS Remote Access USB to RS-232 Serial Adapter is a Rockwell Automation USB-to-serial bridge that enables a modern PC to communicate with legacy RS-232 devices used in Allen-Bradley control systems. The adapter delivers a USB interface on the host side and an RS-232 serial interface on the device side, facilitating direct data exchange, programming, diagnostics, and remote access to equipment such as older PLCs and operator interfaces that rely on RS-232 communication. With the proper Rockwell driver package, the device typically surfaces in Windows as a virtual COM port, simplifying software communication with RS-232 peripherals. Common applications include configuring and debugging MicroLogix, SLC 500, PanelView, and other serial-equipped components from a PC without the need for built-in serial ports. Key specifications and capabilities verified by Rockwell include USB connectivity for the host, RS-232 signaling compatible with standard serial devices, and a compact form factor designed for shop-floor or control-room use. The 9300-USBS is part of Rockwell’s family of remote access tools designed to bridge modern computers with legacy serial equipment, supporting routine tasks such as data retrieval, parameter adjustments, and programming where RS-232 is required. A driver installation is typically required, and installation procedures are provided by Rockwell Automation to ensure correct COM port configuration and reliable operation.