USB to Isolated RS485 / RS422 Adapter - [UV3384]


USB to Isolated RS485 / RS422 Adapter - [UV3384]


Recommended for HiWatt or other high-power applications or when long cable length required (for best EMI immunity). 

The USB-ISO-485 is an industrial-grade bi-directional USB powered 2500V opto-isolated USB to RS485/RS422 converter, which makes a half-duplex RS485 or a full-duplex RS422 available to a PC via the USB port. The USB-ISO-485 optical isolation protects the USB from voltage surges, lightning strikes, GND loops and noise conditions from the RS485/RS422 port.  The USB-ISO-485 has a RJ-45 female connector, db-9 male connector on the RS485/RS422 port with optional included 6 position terminal block, and a USB type A female on the USB port. The adapter is powered from the USB port and no external power is needed. USB cable, terminal block, and drivers are included in the package.  This converter operates from 300 to 128,000 bps.

The USB-ISO-485 uses the latest FTDI chipset and is fully compatible with Windows 10 (32/64), Windows 8.1 (32/64), Windows 8 (32/64), Windows 7 (32/64), Vista (32/64), Server 2012, Server 2008 R2, Server 2008, Server 2003, XP (32/64), 2000, 98Se, CE, Mac 8/9/X, Linux and Android.



  • Plug-and-Play (Hot-pluggable)
  • Adds One RS-485/RS-422 Port Using One USB Port
  • Provides 2500Vrms Isolation
  • RJ-45, DB9 or Included Terminal Block
  • USB 1.1 and 2.0 Compatible
  • Port Powered - No External Power Needed
  • Supports 300 bps to 128,000 bps rates
  • 6 Feet (2m) Cable for Convenience
  • Power/Transmit/Receive LED Indicators
  • Data Direction Auto-turnaround - No Flow Control Necessary
  • Internal 128/385 Byte TX/RX Buffers
  • No IRQs, IO, DMA Required. No IRQ Conflicts
  • Easy to Install Included Drivers
  • Built-in 600W Surge and 15KV Static Protection
  • 5 Year Manufacturer's Warranty
  • RoHS, CE and FCC Compliance Certified


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