You can check this video to know: Installing Label Printer Driver and Prepare before use PM246 Pro on Win 10.

1. Double click the installer to begin.

(1)Before installation, please ensure printer is connected and turned on!

(2)Follow the installation steps until finish.

(3)Click "Get USB Port" to check which USB Port the label printer connect.

(4)Click "Setup" to setup USB Port.

2.After installation, to check the printer is connected successfully: Go to "Control panel" -> "Devices and Printers"
(Right click on "This PC", choose "Properties", then click on "Control panel"-> "Devices and Printers") 

3.Right click on "Label Printer" -> "Printer Properties"-> Click on "Print Test Page"

4.Set as default printer: Right click on "Label Printer" -> choose "Set as default printer" 

5. Select the paper type: Right click on "Label Printer" -> choose "Printer Preferences"

6. Go to the "Page Setup". You can choose the size you need in "Name".

 If the size you need is not listed, then click "New" to create needed size (input the size of "Width", "Length" and "Name", then click "OK" to archive.).

7. You can change the printing speed and the Darkness of your printing (Larger number means higher Darkness)

8. Choose file (PDF file) to print. 

(1)Click "Print" 

(2)Select Printer "Label Printer" 

(3)Before click Print, check the preview and print size. Then click "Print"