The process of downloading the UMAX Astra 3400/3450 Scanner Driver 3.75 driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the UMAX Astra 3400/3450 Scanner Driver 3.75 driver from the primary server - this is the manufacturer’s UMAX 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 UMAX Astra 3400/3450 Scanner Driver 3.75 diver.