
StarTech.com ICUSB422IS Industrial USB to RS422/RS485 Serial Adapter with Isolation
The StarTech.com ICUSB422IS Industrial USB to RS422/RS485 Serial Adapter provides essential connectivity for legacy systems, featuring circuit isolation to protect sensitive equipment and supporting data rates up to 880 Kbit/s.
- Industrial-Grade Isolation: Protects sensitive industrial controls and devices from electrical surges, preventing costly damage and ensuring continuous operation.
- Universal USB Connectivity: Integrates seamlessly with modern Windows, macOS, and Linux systems, extending the lifespan of critical legacy serial equipment.
- Flexible Serial Interface: Supports both RS-422 and RS-485 protocols, enabling versatile connections to a wide range of industrial and commercial devices.
- Robust Metal Housing: Engineered for durability in demanding environments, ensuring reliable performance and reducing maintenance requirements.
Product Overview
Product Overview
The StarTech.com ICUSB422IS is an industrial-grade USB to RS422/RS485 serial adapter, engineered to bridge legacy serial devices with modern computing platforms. It features a USB B connector for host connection and a DB9 port or terminal block for RS-422/RS-485, supporting data transfer rates up to 880 Kbit/s.
Designed for demanding environments, this adapter includes essential circuit isolation, protecting sensitive equipment from electrical interference and surges. Its broad operating system compatibility, including Windows, macOS, and Linux, ensures frictionless integration into diverse IT ecosystems, extending the utility of existing serial infrastructure.
- Core Functionality: Provides a reliable USB to RS422/RS485 serial port, enabling continued operation of essential legacy industrial and commercial equipment.
- Circuit Isolation: Protects connected sensitive controls and devices from electrical damage, preventing costly repairs and ensuring system uptime.
- Broad OS Support: Compatible with Windows, macOS, and Linux kernels, ensuring versatile deployment across various enterprise computing environments.
- Flexible Connectivity: Offers both DB9 and terminal block connections for RS-422/RS-485, adapting to diverse serial device interfaces.
- Operational Value: Extends the lifecycle of existing serial-based systems, providing a cost-effective solution for integrating older hardware with modern IT infrastructure.
This adapter is an essential tool for maintaining and integrating critical serial devices into contemporary business operations.
Technical Specifications
1Performance & Business Impact
2Connectivity & I/O
3Physical & Environmental
4Lifecycle, Warranty & Compliance
Full Specifications
Ports & interfaces5
Power1
Performance3
Weight & dimensions4
Packaging content2
Operational conditions1
Packaging data1
Logistics data1
Downloads1
What This Solves
Connecting Industrial Automation
In manufacturing and processing plants, legacy PLCs and SCADA systems often rely on RS-422/RS-485 for communication. This adapter enables modern USB-equipped computers to monitor and control these critical industrial processes, ensuring operational continuity.
Manufacturing facilities, industrial plants, process control centers, logistics warehouses
Integrating Building Management Systems
Many commercial buildings utilize RS-485 networks for HVAC, lighting, and security access control. The adapter allows IT teams to interface with these building management systems from standard workstations, streamlining facility operations and maintenance.
Commercial property management, facility operations, smart building integrators, campus infrastructure
Modernizing Point-of-Sale Peripherals
Retail and hospitality environments frequently use RS-232/RS-485 for peripherals like receipt printers, barcode scanners, and credit card terminals. This adapter provides a reliable bridge for connecting these essential POS devices to contemporary USB-only systems, preserving existing hardware investments.
Retail chains, hospitality groups, restaurant franchises, small business storefronts
Key Features
Circuit Isolation
Protects connected sensitive controls and devices from electrical surges and ground loops, preventing costly damage and ensuring continuous operation.
RS-422/RS-485 Serial Support
Enables versatile connectivity to a wide array of industrial and commercial serial devices, extending the utility of existing hardware.
Data Transfer Rate up to 880 Kbit/s
Ensures efficient and reliable communication for industrial control, data acquisition, and legacy peripheral operations.
Broad OS Compatibility (Windows, macOS, Linux)
Provides frictionless integration into diverse IT environments, reducing deployment complexity and supporting varied workstation setups.
Durable Metal Housing
Offers enhanced protection against physical wear and tear in demanding industrial or commercial settings, extending product lifespan.
Compatible With
Industrial Control Systems
PLCs, SCADA systems, factory automation equipment, CNC machines
Building Automation
HVAC controllers, access control systems, security cameras, lighting management
Point-of-Sale (POS) Systems
Receipt printers, barcode scanners, credit card readers, cash drawers
Specialized Medical Devices
Diagnostic equipment, lab instruments, patient monitoring systems
Frequently Asked Questions
What is the primary benefit of circuit isolation in this adapter?
Circuit isolation protects your connected RS-422/RS-485 devices and your host computer from electrical surges, ground loops, and transient voltages. This prevents damage to sensitive equipment, ensuring system stability and reducing repair costs.
Can this adapter be used with both RS-422 and RS-485 devices?
Yes, the StarTech.com ICUSB422IS adapter is designed to support both RS-422 and RS-485 serial protocols. It provides flexible connectivity options for a wide range of industrial and commercial serial equipment.
What operating systems are compatible with this USB to serial adapter?
This adapter is compatible with a broad range of operating systems, including Windows CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10, 11, Windows Server (2003-2019), macOS (10.6-13.0), and Linux Kernel 3.0.x+.
Does this adapter require external power?
No, the StarTech.com ICUSB422IS adapter is USB bus-powered, drawing its operational power directly from the host USB port. This simplifies deployment by eliminating the need for an external power adapter.
Warranty & Returns
Manufacturer Warranty
2 Year Warranty
Warranty is provided directly by the manufacturer and covers defects in materials and workmanship under normal use.
Return Policy
Returns subject to manufacturer approval
Hardware returns are governed by the manufacturer's return policy. Some products are non-returnable or subject to restocking fees. Defective items are handled under the manufacturer warranty. Contact Zent Networks before initiating any return.