The Acer Extensa 4420 bluetooth driver here is obtain from Acer Europe website. This verson of driver is suitable for Windows XP 32 bit and Windows XP 64 bit. It is also suitable for Windows Vista. This bluetooth driver is very easy to install. After you have download the [Bluetooth v.5.1.0.3300.zip], you just have to unzip it, and then double click on the setup.exe located inside[Bluetooth v.5.1.0.3300] folder to begin the installation. Then you just have to follow the screen instruction to complete it.
Alternatively, you can try the Free Driver Scanner.
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