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B&B USB To Isolated 422/485 W/Plug Term Block And Leds
- USOPTL4
- Black
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Overview
Specs
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These compact, isolated USB to RS-232 and USB to RS-422, and RS-485 converters allow you to add an asynchronous serial port to your USB only PC. The built in 2 kV isolation protects your port from dangerous ground loops. They are perfect for connecting to remote devices or programming ports in field service applications. They are USB 2.0 compatible. Model USO9ML2 is the RS-232 version and supports hand shake signals as well as data at speeds up to 460.8 Kbps. Model USOPTL4 is the RS-422 and RS-485 version and supports data rates up to 460.8 Kbps. RS-485 2-Wire and 4-Wire modes are selected using a DIP Switch. If you don't need isolation, use model USPTL4. Windows operating systems up to Windows 7 (32 and 64 bit) are supported. The USOPTL4 is equipped with our signature high retention USB port. The RS-422/485 versions have a removable terminal block. Need a strain relief for your RS-422 or RS-485 cable? Check out the accessories tab for our TB5P508SR-2PK.
SB 2.0 USB| Green Compliant: Yes| Green Compliance Certificate/Authority: RoHS| Country of Origin: United States. .
Warranty & Returns
Warranty, Returns, And Additional Information
Return Policies
- Return for refund until: January 31, 2027
- Return for replacement until: January 31, 2027
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.
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The B&B USOPTL4 is an isolated USB-to-RS-422/485 serial adapter for connecting a USB-equipped PC to industrial or other serial devices, making it suitable for field-service technicians and users working with remote equipment or programming ports.
Recommended For
- Field-service technicians connecting a laptop to remote RS-422/485 equipment can use the removable terminal block and USB-powered, isolated serial connection for on-site diagnostics or configuration.
- Industrial maintenance staff troubleshooting PLCs or other RS-485 equipment from a PC may value the electrical isolation, transmit/receive LEDs, and terminal-block wiring; a PLC community user also reported stable use on a plasma table.
- Lab and instrumentation users who need to connect a USB-only computer to a single RS-422/485 instrument can use the adapter as a one-port serial interface, with isolation intended to help protect against ground-loop issues.
- Technicians or engineers working at a fixed PC with legacy RS-422/485 devices can use it to add one serial COM port over USB, provided the computer’s operating system and driver requirements are verified first.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | Connecting a PC or laptop to RS-422/485 serial equipment through USB |
| Serial Interface And Connectivity | RS-422/485 terminal-block serial connection to a USB 2.0 Type-B female port |
| Protection And Indicators | Surge protection with an LED indicator |
| Physical Specifications | 1.9 × 5.5 × 6 in (L × W × H); approximately 190.5 g; matte finish; copper enclosure |
| Package Contents | USB-to-isolated RS-422/485 adapter, 1-meter USB cable, and driver CD |
| Compliance And Warranty | RoHS compliant; country of origin: United States; lifetime limited warranty |
| Model Identifiers | B&B USOPTL4 |