USB C to Serial Adapter Cable with COM Port Retention - 16" (40cm) USB Type C to RS232 (DB9) Serial Converter Cable - For PLCs, Scanners, Printers - Windows/Mac/Linux

Add a serial port with this USB C to serial with COM port retention

Product ID: ICUSB232PROC

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  • USB-C TO SERIAL ADAPTER CABLE: Interface with Serial RS-232 (DB9) equipment using this USB Type-C Serial adapter converter cable w/ COM port retention; Male DB9 connector features screw-lock nuts; Cable length of 16" [40 cm]
  • TECH SPECS: 921.6 Kbps baud | 512 byte FIFO | Data bits of 5/6/7/8 and stop bits 1/1.5/2 | Parity Modes of None, Xon/Xoff, RTS/CTS, DTR/DSR | Flow control options Odd/Even/Mark/Space/None | Black
  • COM PORT CONFIGURATION RETENTION: Using built in, non-volatile memory, this adapter is able to save assigned serial COM port values and automatically re-assign them, even when reconnected to a different port
Your price
$32.99USD

In stock: US: 909 | CA: 33

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Where to buy

This USB-C™ to serial adapter lets you connect your USB-C devices to your legacy serial equipment. It converts a USB-C port on your laptop or computer into an RS232 DB9 serial port with COM port retention. This gives you a cost-saving and convenient way to connect to serial devices such as point-of-sale terminals, serial modems, industrial equipment, and a wide variety of other RS232 peripherals.

Connect with ease

The RS232 adapter cable is compatible with Windows®, macOS and Linux® operating systems, which makes it easy to integrate into mixed environments.

Built-in convenience

A time-saving and convenient USB/serial solution, the adapter retains assigned serial COM port values in nonvolatile memory, allowing the same values to automatically be re-assigned to the adapter serial port if disconnected and reconnected, or disconnected from one USB port and installed in another.

The USB-C serial cable also supports advanced features like remote wake-up and power management control.

The ICUSB232PROC is backed by a StarTech.com 2-year warranty and free lifetime technical support.

Applications

  • Perfect for IT Administrators looking to add legacy functionality to newer notebooks, PCs and servers that lack an integrated RS232 port
  • Connect, monitor and control industrial/automotive sensors and equipment
  • Connect bar code scanners, receipt printers and other point-of-sale devices
  • Connect a satellite receiver, serial modem, or PDA with serial sync
  • Connect and program LED and digital signage boards with serial communication ports

Partner Numbers

  • Tech Data 12786219
  • ASI 205529
  • D&H ICUSB232PROC
  • Ingram Micro USA 2DG846
  • SYNNEX US STA-ICUSB232PROC
  • UPC 065030872003

Compatibility

  • Windows 7 logo
  • Linux logo
  • Windows Server 2012 logo
  • Windows 10 logo
  • macOS Sierra (10.12) logo
  • Windows 8 logo
  • Windows Server 2016 logo
  • macOS Mojave (10.14) logo
  • Windows Server 2019 logo
  • macOS High Sierra (10.13) logo
  • macOS Catalina (10.15) logo
  • macOS Big Sur (11.0) logo
Windows® 7, 8.1, 10
Windows Server® 2008 R2, 2012 R2, 2016, 2019
macOS 10.11 and 10.15, 11.0
Linux 2.6.x to 4.4.x LTS Versions only

Specifications

Warranty Information Warranty 2 Years
Connector(s) 1 - Connector Type(s) USB Type-C (24-pin) USB 2.0 (480Mbps)
DB-9 (9 pin, D-Sub)
Environmental Operating Temperature -10°C to 80°C (14°F to 176°F)
Storage Temperature -20°C to 100°C (-4°F to 212°F)
Humidity 5~85% RH
Hardware Ports 1
Interface Serial
Bus Type USB-C
Port Style Cable Adapters
Industry Standards USB 1.1/2.0 RS232
Chipset ID Prolific - PL2303RA
Packaging Information Shipping (Package) Weight 1.9 oz [54 g]
Package Length 7.9 in [20 cm]
Package Width 8.7 in [22 cm]
Package Height 0.0 in [0.1 mm]
Performance Serial Protocol RS-232
Max Baud Rate 921.6 Kbps
Data Bits 5, 6, 7, 8
FIFO 512 Bytes
Flow Control None, Xon/Xoff, RTS/CTS, DTR/DSR
Parity Odd, Even, Mark, Space, or None Parity Modes
Stop Bits 1, 1.5, 2
MTBF 30,000 Hours
Physical Characteristics Color Black
Cable Length 16.9 in [42.8 cm]
Product Length 16.9 in [42.8 cm]
Product Width 1.4 in [35 mm]
Product Height 0.8 in [20 mm]
Weight of Product 1.3 oz [36 g]
Power Power Source USB-Powered
Software OS Compatibility Windows® 7, 8.1, 10
Windows Server® 2008 R2, 2012 R2, 2016, 2019
macOS 10.11 and 10.15, 11.0
Linux 2.6.x to 4.4.x LTS Versions only
Special Notes / Requirements System and Cable Requirements One available USB-C port
What's in the Box 1 - Included in Package serial adapter cable
quick-start guide

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Frequently Asked Questions

Installation

Starting in High Sierra 10.13, macOS enforces stricter security policies than previous revisions. As a result of these changes, software packages, like those used in this installation, will need to be allowed within the macOS Security and Privacy settings, immediately after the software has been installed, in order for the device to operate.

To allow the software, follow these steps after you've completed installation on your Mac:

  1. Open System Preferences.
  2. Open Security & Privacy.
  3. Click the Allow button near the bottom of the General tab.

Note: The option to allow the software will be available within the Security & Privacy settings for 30 minutes. If the software is not allowed within that time frame, the software must be reinstalled in order for macOS to grant the opportunity to allow it again.

Troubleshooting

Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.

When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:

  • Serial cables

  • Serial ports

  • Serial devices

To test your setup components, try the following:

  • Use the serial cable, serial port, and serial device in another setup to see if the problem is with the components or the setup.

  • Use a different serial cable, serial port, and serial device in your setup to see if the problem persists. Ideally, you should test a component that you know works in another setup.

When you test your cables, it is recommended that you do the following:

  • Test each cable individually.

  • Use short cables when you are testing.

When you test the serial ports and serial device, it is recommended that you do the following:

  • Press the Windows key + R, type devmgmt.msc, and press Enter to open Device Manager. Check to see if your device is listed under Ports (COM & LPT).

  • Make sure that the COM port number is the correct number for the serial device and that the software being used to connect the computer to the serial device uses the correct COM port number. 

  • If the device is listed with an error, follow the instructions on the website to reinstall the drivers.

Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.

To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:

  1. If your serial port is not female, convert it by taking a female/female cable or gender changer and plugging it into the serial port.
  2. Take a metal paperclip or wire and cross pins 2 and 3. If you look closely at the female end, the pins should be numbered.
  3. Open a telnet session on the COM port number of the device that you are testing. To find out the COM port number, refer to the following FAQ: https://www.startech.com/faq/com-port-listing-windows.

Note: To open a telnet session on the COM port, you need a telnet client like PuTTY or Hyper Terminal. Windows XP comes with Hyper Terminal.

  1. When the session is open, anything you type into it you should see. The loopback test fails when you cannot see what you are typing.

If the loopback test fails, make sure that the serial cable or gender changer that you are using works and that the adapter is in the correct port. 

You can check multiple ports at the same time by opening multiple sessions, putting the loopback adapter on one port, and trying to type into each session.  When you can see what you are typing, you know that the COM port is working and you can see which port number the physical serial port is. Close the window for the port that you just tested to speed up the testing of the remaining serial ports.

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Compliance and safety

Compliance letters

  • RoHS
    • Language: English
  • WEEE
    • Language: English

Safety Measures

  • If product has an exposed circuit board, do not touch the product under power.
  • If Class 1 Laser Product. Laser radiation is present when the system is open.
  • Wiring terminations should not be made with the product and/or electric lines under power.
  • Product installation and/or mounting should be completed by a certified professional as per the local safety and building code guidelines.
  • Cables (including power and charging cables) should be placed and routed to avoid creating electric, tripping or safety hazards.
*Product appearance and specifications are subject to change without notice.

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