The Advantech BB-USOPTL4 (ULI-341TC) is an optically isolated USB-to-RS-422/485 converter with a removable terminal-block connection for industrial serial equipment. It is part of Advantech’s ULI-340 / ULI-341TC range and is designed for reliable use in industrial connectivity, automation and remote monitoring applications.

Key features of the BB-USOPTL4

• Adds one isolated RS-422/485 serial port to a USB host
• Supports 2-wire RS-485 and 4-wire RS-422/485 communications
• Serial data rates up to 460.8 kbps
• 2,000 V RMS optical isolation
• USB powered with no external power supply required
• High-retention USB connection and removable terminal block
• Compatible with USB 1.0, 1.1 and 2.0; USB cable included

The BB-USOPTL4 is a strong fit for engineers integrating legacy equipment, field I/O or industrial Ethernet infrastructure where dependable communications and straightforward deployment are important. Use the technical attributes below and the Advantech datasheet to confirm suitability for your exact application.