Black Box USB to RS422/485 Converter with Opto-Isolation
Manufacturer: Black Box Corporation
Mfr. Part: SP390A-R3
- USB - USB - TAA Compliant

About This Product
Overview
- Great for linking older serial devices to computers or laptops with USB ports.
- Offers 2-wire RS-485 or 4-wire RS-422/RS-485 operation.
- Holds connections tight with its high-retention USB connector.
- USB 1.0, USB 1.1, and USB 2.0 compatible (12 Mbps).
- Interface powered. No external power required.
- Serial terminal block can be removed for easy wiring.
- LEDs indicate transmitting and receiving of data.
This compact device quickly converts USB port connections to RS-422/485 so you can connect legacy serial devices to a newer PC or laptop. Continue to use legacy commercial and industrial RS-422/485 devices without making any changes to the applications written for them.
Plus, because it features 2000-volt optical isolation, you can protect your PC and other equipment from dangerous spikes and surges on the RS-485/RS-422 network.
Simply plug it into your PC's USB port using the included USB cable (3-ft.), then configure its DIP switches for 2- or 4-wire operation. The converter will show up as an additional COM port in your PC's Windows Device Manager.
- Get the range and multidrop capability of RS-422/-485 from your PC's USB port
- Also protects PCs and other connected devices from surges and spikes
- Ideal for use in environments heavily susceptible to voltage spikes and ground loops
Quick Specifications
- Product Model
- SP390A-R3
- Product Type
- Transceiver/Media Converter
- Total Number of Ports
- 2
- USB
- Yes
- Power Source
- USB
- Height
- 3"
- Width
- 1.7"
- Depth
- 0.8"
