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6 ft Professional RS422/485 USB Serial Cable Adapter w/ COM Retention


Availability: Out of stock


The USB4228 USB Serial Adapter Cable lets you connect RS422 serial or RS485 serial devices to your USB-enabled computer. The adapter features a 9-pin (DB9) male serial connector as well as dipswitch controls for easy port configuration, and requires minimal software.

The RS422/RS485 USB Adapter is fully powered via the host USB connection and provides power to the attached serial device without requiring an external power adapter.

Advantages of the USB4228

  • COM retention saves the assigned port settings for the device, so disconnecting/reconnecting is hassle free
  • Versatile operating system support including embedded XP, CE, and more
  • USB Powered - no power outlet required, and no cumbersome AC adapter to carry around
  • All in one USB RS-485/RS-422 serial adapter cable with simple dip switches eliminates the need to carry multiple cables and adapters
  • Supports high speed RS-422/RS-485 communication up to 921.6kbps; 400% faster than most USB to RS-232 adapters


Warranty 1 Year
Carton Quantity 30
Chipset ID FTDI - FT232RL
Color Black
Connector Types 1 - DB9 Male
Connector Types 1 - USB A Female
Humidity 5% to 95% RH
Maximum Data Transfer Rate 921.6Kbps
Number of Ports 1
Operating Temperature 0°C to 55°C (32°F to 131°F)
Product Height 0.87 in [2.21 cm]
Product Length 70 in [177.8 cm]
Product Weight 3.53 oz [100 g]
Product Width 1.63 in [4.15 cm]
Shipping (Package) Weight 0.49 lb [0.22 kg]
Storage Temperature -20°C to 85°C (-4°F to 185°F)
OS Compatibility Windows 98SE/ ME/ 2000/ XP(32/64bit)/ 2003(32/64bit)/ Vista(32/64bit)/ 2008(32/64bit)/ CE(4.2/5.2/6.0), Mac 9.8/OS X, Linux 2.4.x and up; Drivers are WHQL certified


What's in the box


  • Supported baud rates from 300bps to 921.6 Kbps
  • Being able to rename devices no matter how many are plugged in
  • COM Port assignments maintained after reboot
  • Configurable port for RS422 or RS485 support
  • Supports RS-485 Auto Transceiver Turn Around by Unique Featured ATTA Hardware
  • Backwards compatible with USB 1.1
  • Combination adapter and cable eliminates the need for additional cables
  • Two interface modes; 4 wire RS422(TxD+/-, RxD+/-), and 2 wire RS485 (DATA+, DATA-)
  • Parity support: None, Even, Odd
  • Data Bits: 7,8
  • Stop Bits: 1,2
  • 120 OHM terminator that can be Enabled/Disabled by DIP switch
  • Transmission Echo for RS485 collision detection
  • Supported OS: Windows 98SE/ME/2000/XP/2003/Vista/7, and Linux


  • Ideal for connecting serial RS422/485 devices to notebooks or tablet PC’s through an available USB port
  • Perfect for controlling/diagnosing manufacturing machines(CNC, Process Control Equipment, Bar Code Scanners, Serial Printers)
  • Security device control (key panels, cameras, card readers)
  • Great for Industrial programmers looking to test new code with serial devices
  • Adapting and expanding POS systems
  • Communicating with test and monitoring equipment.
  • Connect and program LED and Digital signage boards with serial communication ports

Additional Information

Manufacturer No
Length N/A
Color N/A
OS Support N/A

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