Right-click the Windows button and select Device Manager .
Search for a reputable driver archiving repository or catalog containing the . Alternatively, Windows 7 or Windows 8.1 driver packages ( athr.sys or athrx.sys ) can work via compatibility mode. sony usb wireless lan adapter uwa-br100 driver windows 10
Older, legacy Wi-Fi dongles often work better on USB 2.0 ports rather than USB 3.0 (blue) ports. Right-click the Windows button and select Device Manager
Microsoft may eventually remove legacy Ralink support entirely in a future Windows 11 24H2 or 25H2 update. At that point, the UWA-BR100 will become a paperweight. Older, legacy Wi-Fi dongles often work better on USB 2
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Look for a new device under "Other devices" (it might appear as an unknown network controller). Right-click the unknown device and select . Choose "Search automatically for updated driver software" .