You can compile your own carrier starter package extra cheap: a printer + 10 rolls of shipping labels! Size of the shipping labels 102mm x 150mm, 3000 labels.
Design labels directly on your PC with the supplied software.
There is no official driver available for this type of printer as you use a MAC. It is possible to install a compatible driver via CUPS, so you can make use of the printer when working with a MAC.
Download free of charge your manual:
(This printer comes with a standard European plug)
Attention! If you want to use the Zebra GK420d printer with UPS shipments you need to select the UPS Thermal ELTRON 2284 driver.
Furthermore, it is extremely important that the latest version of Java installed.
The standard Zebra driver can be installed later to get rid of the plug and play notification in Windows 7.