USB Cables and Drivers
for Microsoft XP, Vista, W7 & W8
     


 
                (MacOS - Drivers and Info Below)
 
                Determine what Cable I have
 
                Installing the proper Driver 3.2.0.0
 
                FAQs and Error Messages



Note, Chipsets:
Due to Prolific USB/Serial chip 'clones' found in some USB cables, an older driver may be required in lieu of the one supplied by Windows.
Cables with
FTDI or true Prolific chips are compatible with all Windows drivers.
 
 
Note, Prolific Drivers:
Prolific 3.2.0.0 is the recommended driver for Vista, Win7 & Win8        Prolific_3.2.0.0_Download
 
 

Note, Win 7 / 8:
Windows may try to update this driver in the future. If this occurs, turn off automatic updates.
 
 
Note, XP:

If you are using Win XP, the Prolific driver 2.0.2.1 will run with no issues.
This driver for Win XP can be found at:     
2.0.2.1_Download
 
 
Note, MacOS
The recommended Drivers and Info can be found
below.
 
 


        US Sales and
    Warranty Support

 




What chip does my cable have ?
Do I Have the Proper Windows driver ?

1) Insert your USB Programming Cable.

2)
Launch Device Manager.

     [  Start  |  Right-click Computer  |  Select Properties  |  Device Manager  ]

Failure

3) Select: Ports (COM & LPT)
Failure

If there is a yellow warning triangle under 'Ports' or 'Other Devices', you have an incompatible driver and need to continue.

Failure   Failure

If there is no yellow warning triangle, you have the correct driver and are ready to load your programming software.

Success
Note:   
        Your software will ask for this Com Port number later.
        If you change USB ports, the Com Port number will also change.


 
 
Installing the Proper New Prolific PL-2303 Drivers 3.2.0.0
 
System Requires 32 / 64 bit  Windows Vista / 7 / 8


1) Create a new work Folder on your PC.

2) Download the Prolific 3.2.0.0 driver file and save it to the work folder.

[ Prolific 3.2.0.0 ]   (32/64 bit)

3) Remove the USB programming cable from your PC.

4) Double-click the file that was saved into the work folder and follow the prompts until it is completely installed.

5) Plug the USB programming cable into the USB port of your PC.
You should see a balloon popup that says "Installing device driver software"

Installing Device Driver

A few seconds later you will get a balloon popup that says
          "Device driver software was not successfully installed"

Installing Device Driver

6) Launch Device Manager.

          [  Start  |  Right-click Computer  |  Properties  |  Device Manager  ]

Failure

You will see one of the following errors in Device Manager.

In 'Other Devices' the 'USB-Serial Controller' is proceeded by a YELLOW warning.
Failure
          OR
 
In 'Ports (COM & LPT)' the 'Prolific USB-to-Serial Comm Port (COMx)' is proceeded by a YELLOW warning.

Failure

7) Right-click on the entry with the error to open a window and select
          "Update driver software..."

Failure

8) At the first Update Driver Software prompt, select
          "Browse my computer for driver software".

Failure

9) At the second Update Driver Software prompt, select
          "Let me pick from a list of device drivers on my computer"

Failure

10) At the third Update Driver Software prompt, scroll down and select
          "Ports (COM & LPT)".
Failure

11) At the fourth Update Driver Software prompt, select
          "Prolific USB-to-Serial Comm Port Version: 3.2.0.0 [7/31/2007]".

Failure

You should get a prompt saying that the driver was installed successfully.
You should now see a properly installed Prolific driver in Device Manger.

Success

You can check that the correct version is installed by double-clicking on the Prolific entry in device manager and selecting the Driver tab.

The driver version shown should be v3.2.0.0

Success

12) Remove the USB programming cable from your PC and then plug the USB programming cable back in.

13) (Optional) Reboot your computer.
 
 
FAQ
 
 
1
Q:  My programming cable is not being recognized.
 

a)   "Radio did Not Respond" or
     
"Radio did Not Ack Programming Mode"   message appears.
         This is a very common problem.
         Slightly offset audio jacks could be the problem.

         Make sure the connector is snapped in all the way.
         Some cables require a really hard push to snap in that last 1/16 inch.
 
         One indication is that the transmitter may be keyed.
         A slight trimming of the cable's plug side and edge may be required.


Graphic by Mike KF5DEY
  
   This message also appears if the radio is not turned ON while downloading.
 
b)   "Error has Occurred, Could not open Com Port x"  
          Each USB slot is connected to a separate com port to avoid conflict.
          Changing your USB slot will change the COM port number.

c)   "Run-time error 8020: Error reading from comm device."
          Error occurs if Prolific driver version is higher than v3.2.0.0
          You must Downgrade to v3.2.0.0


2
Q:  Why doesn't my new driver work any longer?
A:   When your USB cable is plugged into your computer, the assigned driver is loaded for that USB slot / COM port only. Once Prolific Driver 3.2.0.0 is set up as the driver, you're set to go.

However, the driver does not follow the cable.  If the cable is moved to a different COM port, Windows will now load the newest driver it finds, NOT 3.2.0.0

When this occurs, you will need to load Prolific driver 3.2.0.0 to the new USB slot or plug the cable back into its original USB slot.

You can check the driver loaded using the procedure above.  Cable
 
 
3
Q:  Is there a quick way to find my cable's com port number?
A:   Yes.    Run:  Find Com Port    (Windows)


4
Q:  After changing the com port number of my USB cable in Device Manager, my software reported:     
"An error has occurred - could not open port com[n]: (2, 'CreateFile', 'The system cannot find the file specified.')"     

A:  After making this change, you must unplug and replug your USB programming cable for the com port number change to be effective.
 

Note 1:
     If you are using either CHIRP or the factory software and are having com port / driver issues, please note this is NOT caused by the software. It's strictly between the PC driver and the cable.

Note 2:

     Each USB slot is connected to a separate com port to avoid conflict.
Plugging your cable into a different USB slot will change the com port number and will try to load the Newest Driver.  Make sure the driver loaded for the new com port is 3.2.0.0
 
 
 
MAC Driver for Prolific Cables
 
    
PL2303 USB to Serial Driver for Mac OS X
Prolific Driver PL2303_v0.3.1
    
Mac OSX / Lion Drivers Tools
 
       
       
My thanks to Jim, KC9HI for his hours of testing and his input to this page.

73  John  K3NXU

 
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