The process of downloading the HP ProBook 640 G2 Synaptics Fingerprint Driver 4.5.321.0 Rev.A driver should begin automatically after a few seconds. If this does not occur, click on one of the links below (we recommend downloading the HP ProBook 640 G2 Synaptics Fingerprint Driver 4.5.321.0 Rev.A driver from the primary server - this is the manufacturer’s Synaptics 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 HP ProBook 640 G2 Synaptics Fingerprint Driver 4.5.321.0 Rev.A diver.