SP390A-R3 - Black Box Corporation USB TO RS422/485 CONVERTER | Aztek Computers
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SKU: XCF5SZ5LG5 |  Mfg. Part: SP390A-R3  | UPC: 822088142300  |  0 Reviews  |     Share

SP390A-R3 - Black Box Corporation USB TO RS422/485 CONVERTER WITH OPTO-ISOLATION

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$224.18  $302.64
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Product Overview

OPTO-ISOLATION

Expert Overview

The BLACK BOX CORPORATION SP390A-R3 is a USB to RS422/485 converter designed for industrial and commercial environments requiring reliable serial communication. This device facilitates the connection of RS-422 or RS-485 serial equipment to a host system via a standard USB port. It supports both 2-wire RS-485 and 4-wire RS-422/RS-485 operation, offering flexibility for various serial network configurations. A key feature is its opto-isolation, which protects connected devices from electrical surges and ground loops, enhancing system stability and longevity. This converter is suitable for IT professionals and businesses integrating legacy serial devices with modern computer systems, or for applications where robust, isolated serial communication is critical for data integrity and equipment protection.

Technical Specifications

FFERS 2-WIRE RS-485 OR 4-WIRE RS-422/RS-485 OPERATION. HOLDS CONNECTIONS TIGHT W

Product Details

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  • BLACK BOX CORPORATION
  • SP390A-R3
  • 822088142300
  • New
  • 0.48 lbs
  • 7 X 3 X 6
  • Sep 04, 2026
  • May 01, 2026
  • US
Product Identifiers: Brand: Black Box Corporation • Part #: SP390A-R3 • UPC: 822088142300 • Category: Circuit Breaker Accessories

Frequently Asked Questions

What serial communication standards does this converter support?

The converter supports 2-wire RS-485 or 4-wire RS-422/RS-485 operation, providing versatility for different serial communication needs.

What is the purpose of opto-isolation in this device?

Opto-isolation protects connected equipment from electrical surges, ground loops, and noise, ensuring data integrity and enhancing the reliability of the communication link.

What kind of physical connections does this converter offer?

The product description mentions that it 'holds connections tight,' suggesting a robust physical interface for reliable serial connections.

Is this converter suitable for industrial applications?

Yes, its support for RS-422/485, combined with opto-isolation, makes it suitable for industrial environments where robust and protected serial communication is often required.

SP390A-R3 - Black Box Corporation USB TO RS422/485 CONVERTER WITH OPTO-ISOLATION

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$224.18