Product ID: ICUSB2321X
The ICUSB2321X Professional grade USB Serial Adapter cable converts a USB 2.0 port into an RS232 serial port allowing you to connect to, monitor and control your serial devices. A durable, single cable design makes this the perfect solution for mobile technicians/administrators that require serial connectivity. Once connected, the USB to serial adapter retains assigned serial COM port values, allowing the same values to automatically be re-assigned to the port provided by the adapter in the event it is disconnected, then re-connected to the host computer.
This innovative adapter offers a professional grade solution for connecting legacy or industrial RS232 serial devices to more modern computers, or computers with unused USB ports – perfect for connecting serial modems, barcode scanners or any device with serial sync through USB, eliminating the expense of upgrading the serial peripheral for USB compatibility.
Backed by a StarTech.com 2-year warranty and free lifetime technical support.
Warranty Information | Warranty | 2 Years |
---|---|---|
Connector(s) | 1 - Connector Type(s) | DB-9 (9 pin, D-Sub) |
USB Type-A (4 pin) USB 2.0 | ||
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 2.0 | |
Port Style | Cable Adapters | |
Chipset ID | Texas Instruments - TIUSB3410 | |
Packaging Information | Package Height | 32 mm [1,3 in] |
Package Length | 14,4 cm [5,7 in] | |
Shipping (Package) Weight | 99 g [3,5 oz] | |
Package Width | 17,4 cm [6,9 in] | |
Performance | Serial Protocol | RS-232 |
Max Baud Rate | 230.4 Kbps | |
FIFO | 32 Bytes | |
MTBF | 453,206 hours | |
Physical Characteristics | Weight of Product | 30 g [1,1 oz] |
Color | Black | |
Material | Plastic | |
Cable Length | 30,5 cm [12,0 in] | |
Product Length | 42 cm [16,5 in] | |
Product Width | 35 mm [1,4 in] | |
Product Height | 13 mm [0,5 in] | |
Software | OS Compatibility | Windows® XP, Vista, 7, 8 Windows Server® 2003, 2008 R2, 2012 |
Special Notes / Requirements | System and Cable Requirements | One available USB 1.1 (or above) port |
Note | Windows 10 is only supported by Rev. 2 and up | |
What's in the Box | 1 - Included in Package | USB to Serial Adapter |
Instruction Manual |
Add 5 USB 2.0 ports to any desktop computer with a PCI slot
We are always ready to assist you with any questions you may have.
Live Chat (opens in new window)We are always ready to assist you with any questions you may have.
Live Chat (opens in new window)Some driver installation packages may require you to disable driver signature enforcement in Windows 8, which will allow unsigned driver packages to be installed on your system.
Note: Before you continue, save any open documents and close all open programs.
To disable driver signature enforcement, complete the following:
When your system finishes restarting, complete the following:
When your computer restarts, driver signature enforcement will be disabled and you can install your drivers.
Note: When you restart your computer after you install your drivers, driver signature enforcement will be enabled again. This does not prevent your newly installed drivers from working, but does prevent any other unsigned drivers from being installed until driver signature enforcement is disabled.
Some driver installation packages may require you to disable driver signature enforcement in Windows 8.1, which will allow unsigned driver packages to be installed on your system.
Note: Before you continue, save any open documents and close all open programs.
To disable driver signature enforcement, complete the following:
When your system finishes restarting, complete the following:
When your computer restarts, driver signature enforcement will be disabled and you can install your drivers.
Note: When you restart your computer after you install your drivers, driver signature enforcement will be enabled again. This does not prevent your newly installed drivers from working, but does prevent any other unsigned drivers from being installed until driver signature enforcement is disabled.
Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).
Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Users\your_name\Downloads).
Note: The Select your device’s type from the list below screen does not appear on all systems. If you do not see this screen, skip this step.
Note: To view your system type, click Start. Right-click Computer, and then click Properties.
If the installation is not successful, repeat steps 4 to 11 and click the usbuart3410b file.
Before you install the device, make sure that your operating system is current (for example, the most recent service pack is installed).
Note: Windows usually saves the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\your_name\My Documents\Downloads).
Note: The Hardware Type screen does not appear on all systems. If you do not see this screen, skip this step.
Note: To view your system type, click Start. Right-click Computer, and then click Properties.
If the installation is not successful, repeat steps 4 to 12 and click the usbuart3410b file.
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.
Perform a serial loopback test. See this FAQ on how to perform a RS-232 serial loopback test: http://www.startech.com/faq/serial_loopback_test_rs232_windows
To check whether or not an RS-232 serial port is working, perform an RS-232 loopback test by doing the following:
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.
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.
For products related to this article, click here.
If the USB device does not work after your computer has been in extended hibernation, it is likely that Windows has automatically turned off the USB Root hub to save power.
The steps below outline how to configure the USB root hub to stay on during hibernation, to prevent this from happening.
Windows 10 / 8
Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.
Windows 7 / Vista
Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.
Windows XP
Note: You may need to disconnect and re-connect your USB device after applying these settings to re-establish the connection.
To confirm that Windows detects your USB device, complete the following:
Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to www.StarTech.com and look on the Technical Specifications tab for your product.
Check out our review guidelines.