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Usb Serial Converter Op Com

Dec 16, 2020 • Filed to: USB Recovery • Proven solutions

Have you ever had difficulty connecting your devices to your computer using a Prolific USB to Serial adapter? If yes you are lucky to find this page, it will give you all the information need to fix an unresponsive Serial driver adapter. You may have noticed a yellow exclamation mark hovering over or beside the USB to Serial Driver when searching your Device Manager and if you have we can all agree that it signifies a prevailing problem.

The UC232A USB-to-RS232 serial port converter is the ideal accessory for laptop and desktop computers that do not have a COM or DB9 serial port. Supporting both PC. How to change the COM port for a USB Serial adapter on Windows 7, 8, 8.1, and 10. Originally authored by: Bernie Thompson, July 4, 2011 Start by going to the Devic. Plugable PL2303-DB9 USB Serial Adapter Troubleshooting in Windows. Originally authored by: David Roberts, December 9, 2013 The Plugable USB serial a.

Overview of the Error

If you are not able to connect your device to your PC using a USB to Serial adapter it may be that

The USB driver is outdated
The USB Driver is missing
Or even a corrupted driver

While you can't be so sure what the exact problem is there are solutions you can adopt to fix the issue once and for all. Read on to find quick fixes to resolve the problem.

1# Fix Prolific USB to Serial Driver not Working

Solution: Roll your Prolific USB to Serial Driver back to an older version

Updating your drivers often work wonders for your system because it makes sure that it runs on the latest features that guarantee maximum functionality. Unfortunately updating your drivers can cause this kind of error especially if your latest update does not work too well with your hardware. Once you upgrade your PC to the latest Windows version your Prolific USB to Serial Driver also updates to the latest driver software and if the driver is not compatible with your Hardware issues may arise. To correct the error, you will have to download the driver again by following these steps.

Right-click on your PC Start button and open Device Manager

Double click LPT and COM ports then locate the Prolific USB to Serial Driver and right-click it so you can select Update Driver

For driver software click My computer

From My computer select 'Let me pick from a list of drivers available'

Choose an older version from the list then click Next

The driver you selected will be installed automatically
Once it has been downloaded reconnect the driver to see if it works.

2# Fix Prolific USB to Serial Driver 'Coder 10'

Driver issues reveal themselves in so many ways or through messages such as

This device will not start (Code 10)
There is no driver installed in this device
The driver was not successfully installed

A code 10 error may arise because the chip you are using is not an original one. If you are using a fake, the manufacturer has a way of disabling it due to copy write infringement and the copy write takes effect once you download a recent update. To protect your PC from getting this code, you will have to make sure that your Windows 10 never updates a driver without approval. Updates come in the form of 64 bit and 32-bit drivers. Below we will show you how to work your way around the problem.

Window 64 bit Fix

To fix Windows 64 bit OS including Prolific USB to Serial Adapter, follow through these steps.

Download 'PL2303_64bit_Installer.exe and Save
Remove every USB to Serial adapter from your PC and double click the 'PL2303_64bit_installer.exe
Follow the prompt by plugging in one USB to Serial adapter the click on Continue
Reboot your PC to get Windows up and running

If you have followed these process through and you still see the same error go to your device manager

Open the control panel and navigate to Device Manager
From your control panel navigate to the System category and click the Hardware tab
Scroll to the LPT/COM port and double click Prolific USB to Serial Comm Port
Click Drivers in the Properties section
The Driver you choose should read '3.3.2.102 with an appropriate date attached
If the date is wrong then it means the wrong driver was installed
Unplug the Serial adapter and run the steps again to install the correct driver

Window 32-bit

For Windows 32-bit OS systems follow these steps

You will have to download the 'PL-2303_Driver_Installer.exe and save from Microsoft download link
Run the program and eradicate the driver if you can
Run the installer once more to install a correct driver

To Troubleshoot for error if your device still does not work

Go to Control panel, enter System to access your Device Manager
Scroll down to the LPT/ COM port then double click Prolific USB to Serial Comm Port
Click Driver in the Windows Properties section
The driver must be numbered as '2.0.2.8' and dates accordingly

If the driver was not installed, remove the Serial adapter then run 'PL2303_Driver_Installer.exe' again. Follow directions in Device Manager to download the correct driver

The three solutions listed in this article have proven to be quite helpful in fixing a Prolific USB to Serial driver not working on Windows 10. They may appear confusing at first but if you follow each step in detail you can resolve the issue.

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Configuring a USB to Serial Converter

Usb To Serial Port Converter

Last update - 6/25/2018

Some of the newer laptops of the past few years no longer have traditional RS232 serial ports, however the CROPSCAN MSR System can still be operated or connected to these laptops by use of a USB-to-Serial converter. Various brands of USB-to-Serial converters are available at most computer stores or from numerous computer related websites by mail order.

NOTE: Be sure to install the appropriate USB-to-Serial driver for the Windows operating system on your PC. You may need to visit the USB-to-Serial manufacturer's webpage for the latest windows drivers. Some of the older USB-to-Serial adapters are not compatible with the newer versions of Windows and you may need to get a newer USB-to-Serial adapter.

A Belkin USB to Serial Converter:

To determine the COM port number of the USB to Serial Converter, do the following:

Click Start on your computer. Move the mouse pointer to Settings. The following should appear:
WinXP Win7
Click on Control Panel. Something similar to the following should appear:
WinXP Win7
Double click on 'System'. The Systems Properties window should appear:
WinXP Win7
WinXP: Click on the Hardware tab. The following (below) will appear. Win7: Go to the next step below.
WinXP
WinXP: Click on the Device Manager button near the middle right of the window. Win7: CLick on Device Manager near top of left column (above). Something similar to the following should appear:
WinXP Win7
Click on the + to the left of Ports to expand the ports list. There should be an entry corresponding to the brand of USB to Serial converter you have installed. In this case, it is a Belkin F5U109 USB to Serial Converter:
WinXP Win7
Right Click on the USB to Serial Converter item. A pop-up window should appear:
WinXP Win7
Left click once on Properties. Something similar to the following should appear:
WinXP Win7
Click on the 'Port Settings' tab. The following should appear. Click the pull-downs and set values as shown:
WinXP Win7
Click the 'Advanced' button. The following should appear:
WinXP Win7
Make note of the COM port number.
Next click on the OK button and after that click on OK buttons or close buttons, as appropriate, to back out of all of the windows just opened.

Enter the COM port number, found above, at the COM port prompt in the CROPSCAN MSR Software (TERMINAL, RETRIEVE, etc.).

Note: If that same COM port is used for other devices (GPS, PocketPC or PDA synchronizing) be sure to end those programs or configure them not to be using the COM port when using the COM port with the MSR System software, otherwise erratic behavior can result.

CROPSCAN, Inc. Home PageCROPSCAN, Inc.
1932 Viola Heights Lane NE
Rochester, MN 55906 USA
Phone: (507)285-9230
Email: Cropscan@compuserve.com