With MEGA extension you can download files from the MEGA server through Mozilla Firefox, the browser in which this plug-in is integrated. This kind of download manager allows you to deal simultaneously with a large number of links, additionally taking charge of increasing the performance of each download made.
This add-on connects to the Mozilla Firefox interface without complicating its installation, as it is an XPI file and just drag and drop it on the browser to install it. Then you can start all the downloads you want without any limit.
Each time a download is completed, you will receive a notification so that you can be aware of its completion. The content in question can be found in the folder previously defined as the destination of the downloaded items.