StarTech.com

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

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

Product ID: ICUSB2324852

  • Backwards compatible with USB 1.1
  • USB-powered; No additional external power adapter required
  • Both ports can function simultaneously with mixed or matched communication protocols
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  • Includes a bracket for wall mounting the USB to Serial adapter
  • Features rugged screw-lock USB port to ensure cords are not accidentally disconnected
  • Ability to rename devices for easy recognition
  • COM Port assignments maintained after reboot
  • Port 1 (DB9) configurable for RS232, RS422, or RS485; Port 2 (Terminal Block) configurable for RS422 or RS485
  • Multiple interface modes, including: 4 wire RS422(TxD+/-, RxD+/-), and 2 wire RS485 (DATA+, DATA-)
  • Supports RS-485 Auto Transceiver Turn Around by Unique Featured ATTA Hardware
  • External power adapter can be used (not required) if your device needs extra power beyond what the USB host can provide
  • Transmission Echo for RS485 collision detection
  • USB to 2 Port Straight-Through RS232/422/485 Serial Adapter
$143.99 CDN
365+ In stock
In stock
CA: 18 | US: 347
365+
In stock
Where To Buy
Same Day Shipping on in-stock items from Canada if ordered by 5pm ET* Details

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Overview

The ICUSB2324852 2 Port USB to RS232 RS422 RS485 Serial Adapter with COM Retention 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 dip-switch 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 office or industrial settings, 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.

Backed by a StarTech.com 2-year warranty and free lifetime technical support.

The StarTech.com 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

Applications

Adapting and expanding POS systems

Great for Industrial programmers looking to test new code with serial devices

Connect serial RS232, RS422, or RS485 devices to notebooks or tablet PC’s through the USB port

Perfect for controlling, monitoring, and diagnosing manufacturing machines (CNC, Process Control Equipment, Bar Code Scanners, Serial Printers)

Security device control (key panels, cameras, card readers)

Technical Specifications

Warranty Information
Warranty 2 Years
Hardware
Bus Type USB 2.0
Chipset ID FTDI - FT2232H
Interface Serial
Port Style External Hub
Ports 2
Performance
Data Bits 7, 8
FIFO 128 Bytes
Flow Control Xon/Xoff, Hardware, and None
Max Baud Rate 921.6 Kbps
Parity Odd, Even, Mark, Space, and None
Serial Protocol RS-232/422/485
Stop Bits 1, 2
Connector(s)
Connector Type(s) 1 - USB Type-A (4 pin) USB 2.0 Male
External Ports 1 - DB-9 (9 pin, D-Sub) Male
1 - Terminal Block (5 Wire)
Software
OS Compatibility Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Mac OS X® 10.6 to 10.13
Linux 2.4.x to 4.4.x LTS Versions only
Indicators
LED Indicators 1 - Red - Power LED
Power
Center Tip Polarity Positive
Output Current 0.385A
Output Voltage 5 DC
Plug Type B
Power Source Not Included (not required for standard applications)
Environmental
Humidity 5~95% RH
Operating Temperature 0°C to 55°C (32°F to 131°F)
Storage Temperature -20°C to 85°C (-4°F to 185°F)
Physical Characteristics
Color Gray
Enclosure Type Plastic
Product Height 0.9 in [23.2 mm]
Product Length 3.2 in [82.3 mm]
Product Weight 10.6 oz [300 g]
Product Width 1.7 in [44.2 mm]
Packaging Information
Shipping (Package) Weight 10.9 oz [310 g]
What's in the Box
Included in Package 1 - Wall mounting bracket
1 - USB to RS232/RS422/485 Adapter
1 - USB A to B Cable
1 - Driver CD
1 - Installation Guide

Compatibility

View full OS compatibility
Windows® CE (4.2, 5.0, 6.0), XP Embedded, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10
Windows Server® 2003, 2008 R2, 2012, 2012 R2, 2016
Mac OS X® 10.6 to 10.13
Linux 2.4.x to 4.4.x LTS Versions only

Certifications

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Accessories

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

Customer Reviews

5 (2 reviews)
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1 - 2 of 2 Reviews

(5 stars) Solid and Reliable

By:
I develop medium and high volume industrial test equipment for a living. I have used these specific modules for years and have never been disappointed. I use all the modes, RS232. 422, and 485. Never had a problem, or funny behavior. No dropped data, no corrupt data, no framing errors, etc. they just work. I use them directly through programs like teraterm, and through NIs Labview/TestStand. This is my 'go to' adapter
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(5 stars) The serial Modbus testing solution

By:
I used this device in combination with a Modbus simulation program with success setting up serial communication between devices. Trouble free driver install on a Windows 7 laptop and straightforward directions setting up the serial protocol (my case RS 485)
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