Manufacturer: A4Tech Hardware Type: Webcam Compatibility: Windows XP, Vista, 7, 8, 10 Downloads: 62,400,791 Download Size: 3.4 MB Database Update: Available Using DriverDoc: This page contains information about installing the latest A4Tech Webcam driver downloads using the. A4Tech Webcam drivers are tiny programs that enable your Webcam hardware to communicate with your operating system software. Maintaining updated A4Tech Webcam software prevents crashes and maximizes hardware and system performance. Using outdated or corrupt A4Tech Webcam drivers can cause system errors, crashes, and cause your computer or hardware to fail. Furthermore, installing the wrong A4Tech drivers can make these problems even worse.