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USB to RS485 / RS422 Converter, Mini Premium

  • Model: XS885
  • In Stock


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Industrial grade mini RS485 / RS422 to USB converter similar to our part MWE820A, the difference between the two is that this converter has industrial grade specifications, with working temperatures from -40 to +85 degree Celsius. The housing is made of hardened ABS plastic with a reinforced terminal header for easy connection of communication wires.

This RS485 to USB converter is electrically protected against static electricity, high voltage spikes and other dangerous voltage spikes which can damage your equipment or data signaling. This protection is accomplished by four TVS's (Transient Voltage Suppressors), one for each data line.

Power for this converter is provided from the USB port so there is no need for an external power supply. It is designed around the high performance and very reliable FT232RL processor chip from FTDI, so it is fully compatible with all versions of Windows, Mac and Linux.

This particular RS485 to USB converter is designed mainly for industrial environments but is also suitable for most other applications including any general office, commercial and laboratory environment.
It is a bi-directional, (meaning it communicates in both directions) and reliable converter that easily lets you connect any RS485 or RS422 device directly to your computer's USB port, efficiently converting USB signals to half-duplex RS485 or full-duplex RS422 and vice versa.

After installation of the included drivers the virtual COM port will automatically show up in your computer's Device Manager and can be accessed as if it was a standard built-in COM port.

The RS485 / RS422 end is a standard 5-screw terminal header for easy connection of single wires.
Automatic send data control is enabled by default so no external flow or handshake control is needed.

Overall features
  • USB port-powered converter
  • High-performance chipset
  • Output 1: RS485 2-wire half duplex
  • Output 2: RS422 4-wire full duplex
  • Interface: Terminal screw connections
  • Automatic Send Control
  • Guaranteed genuine non-clone FTDI processor chips
    using Windows WHQL certified drivers (beware of clones)
  • Compatible with Modbus RTU/ASCII and BACnet
  • Up to 32 nodes in network configuration

Useful optional accessories
(not included)

Null modem adapter
Null modem adapter

DB9 to RJ45 adapter
DB9 - RJ45 adapter

DB9 gender changer
Gender Changer

Part number XS885
Operating system
  • Windows 11, 10, 8.1, 8 (32/64-bit), Windows Server 2016, Windows Server 2012 / R2, Windows 7 (32/64-bit), Windows Server 2008 R2, Vista (32/64-bit), Windows Server 2008 (32/64-bit), XP, Windows Server 2003 (32/64-bit), 2000, (all WHQL compliant). Windows RT as D2XX drivers only.
  • Windows CE v4.2 - 5.2, 6.0, 7.0 and 2013 including: Windows Mobile 2003, 2003 SE, Windows Mobile 5, 6, 6.1 and 6.5
  • Linux (built into kernel 3.0.0-19 and above)
  • Mac OS 8, OS 9, OS X 10.3 to 10.9 and above
  • Android
Processor FTDI FT232RL
Serial driver Sipex SP485EE
Unique chipID no. Yes, each converter has it own unique ID number which can be accessed by the user with the D2XX driver programmers guide.
RS485 / RS422 Interface Screw terminal header
RS485 output power 3.60VCD (between D+ and GND)
Fail-safe bias resistors Yes
USB interface Standard Type A Male
Indication LEDs TX, RX and Power
Ports 1-port availble for RS485 and RS422 individually
Signals RS485, 2-wire half duplex: D+, D-, GND
RS422, 4-wire full duplex: TX+, TX-, RX+, RX-, GND
Baud rate 300-921.600bps (up to 3Mbps by using alising)
Parity None, Odd, Even, Mark, Space
Data Bits 7, 8
Stop Bits 1, 2
TX / RX buffer size 256 Byte Transmit Buffer / 128 Byte Receive Buffer
Adjustable USB transfer sizes for TX and RX From 64 bytes to 4096 bytes
Adjustable latency timer 1 to 255 msec
Adjustable read and write timeouts 0 to 10000 msec
Flow Control None, Xon/Xoff, Hardware
COM port accessible by Included virtual COM port drivers or FTD2XX.DLL
Special features
  • Compatible with Modbus RTU/ASCII, BACnet
  • Supports non-standard baud rates
  • Automatic Send Control
Electrostatic (ESD) protection 600W surge protection, 15KV static electricity protection
Current draw Static: less than 80mA. Dynamic average: less than 150mA
Interface compliance USB1.1,2.0,3.0, EIA/TIA RS-232
Regulatory compliance FCC, CE and RoHS
Temperatures Operating: -13°F to 158°F (-25°C to 70°C)
Storage: -40°F to 185°F (-40°C to 85°C)
Size 63 x 34 x 13mm
Warranty 1 year limited warranty

For alternative USB to serial RS485 and RS422 solutions please see our full selection of USB to Serial RS485 converters

Read the Review
Date Added: 11/02/2014 by Janet Hudson
4 of 5 Stars!4 of 5 Stars!
this is a good little converter, works well with most of my stuff

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Date Added: 09/01/2013 by Bryan Gallagher
4 of 5 Stars!4 of 5 Stars!
Just wanted to say that Im happy with this converer. Works good with Windows 8 which is what I need....

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Date Added: 07/24/2012 by Terry Cole
5 of 5 Stars!5 of 5 Stars!
We went from the $53 unit down to this one and it looks and performs great. Great adapter

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Date Added: 07/13/2011 by Becky Staller
4 of 5 Stars!4 of 5 Stars!
Works fine thank you. The drivers are pretty easy to install and the converter works fine immediatel...

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