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Troubleshooting: Problems installing LabelWriter printers with USB 3 on Windows 7

9 CommentsFriday, 17 October 2014  |  Tech Support

Having trouble installing your LabelWriter?

It has been discovered that some LabelWriter printers manufactured after April 1, 2014 will not properly install on Windows 7 PCs when attached to a USB 3.0 port. DYMO has developed an update that will fix this problem on these printers.

If you are having installation problems with your Labelwriter and think it could be affected by this problem, then check your serial number against the numbers below.   First, identify your product and region.  Then if the serial number on your product is GREATER THAN the number listed you have an affected product (and if it isn't, you don't):

LabelWriter 450 (US)


LabelWriter 450 (Europe, Middle East, Africa)


LabelWriter 450 TURBO (US)


LabelWriter 450 TURBO (Europe, Middle East, Africa)


Where to find your serial number

The problem only affects LW450's and LW450 Turbos, not Twins, Duos or 4XL printers.

To fix an affected machine

Before you download the update, read these instructions to put your label printer into program mode.

  1. Remove the labels from the label printer.
  2. Disconnect the USB cable from your computer
  3. Disconnect the power adapter.
  4. Wait 10 seconds.
  5. Press and hold the only button on the front of the printer while plugging in the power adapter.
  6. Release the button. The LED status light on the front of the printer should be solid blue.
  7. Connect the USB cable to your computer and click the download button below.




If you're still experiencing problems please contact the Dymo Helpdesk:


Matthew Meyer
Monday, 27 February 2017  |  21:35

This fix does not work. I have a 450 Turbo and my computer wont recognize the USB connection.

Tech Support
Tuesday, 28 February 2017  |  8:05

What is the serial number of your machine?