Follow these simple steps to setup your Shopify to Print to NT-LP110A. Click on Settings on the left side menu.

Select Shipping under Settings.

Set your Shipping Label Printing to “4 x 6 label printers (DYMO or similar). Click on “Print test label” to print a sample label.

Alternatively, you may update your label settings when you are purchasing postage for your order.
Please refer to the following screenshot for details