The process of downloading the SteelSeries Rival 300 Mouse Driver/Utility 3.4.4.1 for Mac OS driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the SteelSeries Rival 300 Mouse Driver/Utility 3.4.4.1 for Mac OS driver from the primary server - this is the manufacturer’s Steelseries official website). If the download still fails to run, check whether your anti-virus software is not blocking the connection to the manufacturer server of the SteelSeries Rival 300 Mouse Driver/Utility 3.4.4.1 for Mac OS diver.