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Black Box SP385A-R3 USB to RS232 Opto-Isolated Converter
- Converts USB signals to RS232 serial signals
- Opto-isolated design protects connected devices from ground loops and voltage spikes
- Supports data rates up to 115.2 kbps
- Powered by the USB port, no external power adapter required
- Plug-and-play installation with automatic driver installation
- Durable metal casing for industrial environments
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Key specifications
See full specs ↓- Product Type
- USB to RS232 Converter
- Interface
- USB 2.0 to RS232
- Isolation
- Opto-isolated
- Data Rate
- Up to 115.2 kbps
- Connectors
- USB Type-A, DB9 Male
- Power Source
- USB Bus Powered
Product details
The Black Box SP385A-R3 is an opto-isolated USB to RS232 converter. It provides a reliable serial port connection for devices that lack native serial interfaces, ensuring data integrity through optical isolation.
Technical Information
| Product Type | USB to RS232 Converter |
| Interface | USB 2.0 to RS232 |
| Isolation | Opto-isolated |
| Data Rate | Up to 115.2 kbps |
Additional Specifications
| Connectors | USB Type-A, DB9 Male |
| Power Source | USB Bus Powered |
| Operating System Support | Windows, macOS, Linux |
Description
The Black Box SP385A-R3 is a high-performance USB to RS232 converter designed to bridge the gap between modern USB-equipped computers and legacy serial devices. This converter is essential for applications where a computer lacks a native serial port but needs to communicate with devices such as industrial controllers, laboratory equipment, point-of-sale systems, or older modems. The SP385A-R3 ensures reliable data transmission by converting USB signals into standard RS232 serial signals, making legacy hardware compatible with contemporary computing environments. A key feature of the SP385A-R3 is its opto-isolation technology. This provides a critical layer of protection by electrically separating the USB side from the RS232 side. This isolation prevents ground loops, common mode voltage differences, and voltage spikes from damaging either the computer or the connected serial device, thereby enhancing system stability and longevity, particularly in electrically noisy industrial settings. Installation and operation are streamlined with plug-and-play functionality. The converter is powered directly from the USB port, eliminating the need for an external power supply. It supports data transfer rates of up to 115.2 kbps, catering to a wide range of serial communication requirements. The robust metal casing further ensures durability, making the SP385A-R3 a dependable solution for both desktop and industrial applications.
Condition: Refurbished
Free U.S. ground shipping
Typically 1–2 days handling, 3–7 days in transit.
Purchase orders accepted
Government, enterprise, data center and small business.
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