StarTech ICUSB422IS – Industrial USB to RS422/RS485 Serial Adapter with Isolation

Overview :

The ICUSB422IS is a professional-grade industrial adapter designed to provide a reliable serial interface for mission-critical applications. It allows users to connect RS-422 or RS-485 serial devices to a host computer via a standard USB port. This adapter is specifically engineered for environments where electrical noise, ground loops, or surges are present, making it a vital tool for industrial automation, HVAC systems, and manufacturing control.

Technically, the adapter features 2500Vrms optical isolation and 500W surge protection, safeguarding your expensive host computer and connected peripherals from high-voltage spikes and electrical interference. It supports both 2-wire and 4-wire RS-485 modes and RS-422 communication at data transfer rates up to 921.6Kbps. The unit is built with a native FTDI chipset, ensuring broad compatibility across Windows, macOS, and Linux, while providing "COM retention" to keep assigned port values consistent after reboots.

Optimized for harsh conditions, the ICUSB422IS is encased in a rugged, wall-mountable metal housing. It simplifies connectivity with a terminal block interface for direct wiring and a USB-B port for the host connection. The device is bus-powered, meaning it draws all necessary operating power from the USB connection, eliminating the need for an external power adapter in most scenarios.

Key Features :

• 2500Vrms Optical Isolation protects host equipment from industrial electrical surges.

• Multi-Protocol Support for RS-422 and RS-485 (2-wire/4-wire) serial devices.

• Industrial Metal Enclosure provides durability and EMI shielding for harsh environments.

• FTDI Chipset ensures high reliability and consistent COM port retention.

• Bus-Powered Design eliminates the need for an external power supply.

Technical Specifications :