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2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention


Availability: Out of stock


Add RS232, RS422 and RS485 support to your laptop, netbook or desktop computer via USB

The USB2x232 2-port, wall-mountable USB Serial Adapter lets you connect every type of serial device to your USB-enabled computer, whether it be for RS232, RS422, or RS485 communication. The adapter features a 9-pin (DB9) male and a 5-pin terminal block serial connector as well as dipswitch controls for easy port configuration with minimal software requirements. The adapter also supports using 2 ports simultaneously, including with mixed protocols; for example RS-232 on port 1, and RS-485 on port 2, or a number of other combinations.

For a convenient, and clean installation in an office or industrial setting, the RS232/RS422/RS485 USB Adapter is wall-mountable and fully powered via the host USB connection, providing power to the attached serial device without requiring an external power adapter.

RS232/Rs422/RS485 Adapter Advantage

  • This single adapter is compatible with any serial device protocol (RS232, RS422, and RS485), and even allows mixing protocols for simultaneous communication over both ports
  • COM retention saves the assigned port settings for the device, so disconnecting/reconnecting is hassle-free
  • USB Powered - no power outlet required, and no cumbersome AC adapter to carry around


  • Port 1 (DB9) configurable for RS232, RS422, or RS485; Port 2 (Terminal Block) configurable for RS422 or RS485
  • COM Port assignments maintained after reboot
  • Multiple interface modes, including: 4 wire RS422(TxD+/-, RxD+/-), and 2 wire RS485 (DATA+, DATA-)
  • Both ports can function simultaneously with mixed or matched communication protocols
  • Ability to rename devices for easy recognition
  • USB-powered; No additional external power adapter required
  • External power adapter can be used (not required) if your device needs extra power beyond what the USB host can provide
  • Includes a bracket for wall mounting the USB to Serial adapter
  • Transmission Echo for RS485 collision detection
  • Supports RS-485 Auto Transceiver Turn Around by Unique Featured ATTA Hardware
  • Features rugged screw-lock USB port to ensure cords are not accidentally disconnected
  • Backwards compatible with USB 1.1


  • Perfect for controlling, monitoring, and diagnosing manufacturing machines (CNC, Process Control Equipment, Bar Code Scanners, Serial Printers)
  • Great for Industrial programmers looking to test new code with serial devices
  • Security device control (key panels, cameras, card readers)
  • Connect serial RS232, RS422, or RS485 devices to notebooks or tablet PC’s through the USB port
  • Adapting and expanding POS systems
Warranty 1 Year
Chipset ID FTDI - FT2232H
Color Gray
Humidity 5% to 95% RH
Number of Ports 2
Operating Temperature 0°C to 55°C (32°F to 131°F)
Product Height 0.91 in [23.2 mm]
Product Length 3.24 in [82.3 mm]
Product Weight 10.59 oz [300 g]
Product Width 1.74 in [44.2 mm]
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Max Baud Rate 921.6Kbps
Data Bits 7, 8
Stop Bits 1 and 2
Parity Odd, Even, Mark, Space, and None
Flow Control Xon/Xoff, Hardware, and None
LED Indicators 1 - Red - Power LED
Bus Type USB 2.0
Connector Types 1 - DB9 Male
Connector Types 1 - Terminal Block
Connector Types 1 - USB B Female
Power Adapter Included Optional
Output Voltage 5 DC
Output Current 385mA
Center Tip Polarity Positive
Plug Type B
OS Compatibility Windows 98SE/ ME/ 2000/ XP(32/64bit)/ 2003(32/64bit)/ Vista(32/64bit)/ Server 2008(32/64bit)/ 7(32/64bit)/ Server 2008 R2, Mac 9.8/OS X, Linux 2.4.x and up;
Windows XP Embedded, CE 4.2/ 5.2/ 6.0, PocketPC 2003, Mobile 5, 6
Shipping (Package) Weight 12.35 oz [350 g]
Carton Quantity 50

Additional Information

SKU USB2x232
Manufacturer No
Length N/A
Color N/A
OS Support N/A

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