You could have downloaded GL220_820-APS 1.12 from our software library for free. Our built-in antivirus checked this download and rated it as virus free. The most popular versions of the software are 1.1 and 1.0. This free program was originally developed by Graphtec. The software is included in System Utilities.
From the developer:
GL220_820-APS is a free-to-use app that allows you to control and monitor Graphteccorp devices. Also with this app you can update your firmware device.
You may want to check out more software, such as Right PDF printer, broadband medic or Faxtastic, which might be related to GL220_820-APS.