Driver Avermedia A857 - Windows 7 64 Bits Link
Click the button, right-click Computer , and select Manage . Choose Device Manager from the left sidebar.
To ensure stability, you must use the official AVerMedia driver designed for 64-bit operating systems. A 32-bit driver will not work on a 64-bit system. AVerMedia A857 Driver v1.2.x.x (64-bit) Driver Version: 1.2.64.49 (Recommended) Download Official AVerMedia A857 Drivers (AverMedia Site) Driver Avermedia A857 Windows 7 64 Bits LINK
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