Advanced Card Systems Limited ACR3901U-S Benutzerhandbuch
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8. It the windows security warning message shows as below
,select “Install this driver software
anyway “to continue the installation.
9. Wait until the driver updates successfully, the message will shows which COM Port is
assigned to the Bluetooth adaptor. (*As the example below, the assigned com port is COM8.)
Press “Close” to finish the installation.
Press “Close” to finish the installation.