Sony does not provide official Windows 10 drivers for the UWA-BR100 USB Wireless LAN Adapter, as it was designed exclusively for use with Sony BRAVIA TVs, Blu-ray players, and home theater systems. Sony explicitly states that there are no downloads available for this product on their support site.
If you are attempting to use this adapter on a Windows 10 PC, consider the following options: 1. Check for Built-in Windows Drivers
Windows 10 may automatically recognize the adapter if you plug it in, as some versions of this hardware use common chipsets (often from Buffalo or Ralink). Plug the adapter into a USB port. Open Device Manager.
Look for an "Unknown Device" or "Sony UWA-BR100" under Network Adapters.
Right-click and select Update driver > Search automatically for drivers. 2. Third-Party Driver Repositories
While not official, some third-party sites host driver packages that may work. Use caution when downloading from these sources.
DriverScape: Lists a version (2.0.0.70) reported to support Windows 10.
DriverIdentifier: Provides various versions, including one specifically mentioned for Windows 10 Pro. sony usb wireless lan adapter uwa-br100 driver windows 10
CommView Drivers: Some users have successfully used CommView-branded drivers for this specific hardware ID (USB\VID_0411&PID_017F). 3. Alternative Hardware (Recommended) Drivers and Software updates for UWA-BR100 | Sony USA
Step 1: Download the Correct Driver
Do not search blindly. Go to a trusted repository like MediaTek’s legacy driver page or a reliable hardware database. The driver you need is often labeled:
Ralink RT2870 USB Wireless LAN Card Driver for Windows 10 (64-bit)
Note: As of 2024-2025, a reliable source is the “Microsoft Update Catalog.” Search for “Ralink RT2870” and download the latest CAB file.
Step 2: Extract the Driver Files
If you download a ZIP or CAB file, extract it to a folder on your desktop (e.g., C:\UWA_BR100_Driver).
Step 3: Open Device Manager
Windows + X and select Device Manager.Step 4: Force the Driver Update
.inf file – typically netr28u.inf or rt2870.inf).Step 5: Handle the Driver Signature Warning If Windows warns you about an unsigned driver: Sony does not provide official Windows 10 drivers
F8 (or Shift + Restart > Troubleshoot > Advanced Options > Startup Settings > Disable Driver Signature Enforcement).Step 6: Reboot After installation, restart your computer. The adapter should now appear as “Ralink 802.11n Wireless LAN Card” without any errors.
Windows 11 has even stricter driver requirements. The generic Ralink driver method (Method 2) does work on Windows 11, but you must disable Driver Signature Enforcement each time you install it. After installation, the adapter will continue to work across reboots.
Important: 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.
While not ideal for Windows 10 22H2 or later, some users report success with this method.
Step 1: Download the original Sony driver from a legitimate archive (Sony’s official support site has removed it, but it is preserved on the Internet Archive or tech support forums). The filename is typically UWA_BR100_driver.exe.
Step 2: Right-click the installer file and select Properties.
Step 3: Go to the Compatibility tab.
Step 4: Check “Run this program in compatibility mode for” and select Windows 7.
Step 5: Also check “Run this program as an administrator.”
Step 6: Run the installer. Follow the prompts.
Step 7: After installation, go to Device Manager. If you see a yellow bang, right-click the adapter > Update driver > Browse my computer > Let me pick > Select the Sony driver from the list.
Reality Check: This works on older Windows 10 builds (1507, 1511). On modern builds, you will likely get a “Driver is not intended for this platform” error.
You’ve installed the driver, but the Wi-Fi is flaky, disconnects, or has low signal.
Inside the Sony UWA-BR100 is a Realtek RTL8192CU chipset. By using the generic Realtek driver for that chipset, the adapter works perfectly on Windows 10. Step-by-Step Guide: Step 1: Download the Correct Driver
| Issue | Workaround | |-------|-------------| | Driver signature error (Windows 10 64-bit) | Disable driver signature enforcement temporarily (Advanced startup → Restart → Disable driver signature). | | Adapter disconnects after sleep | Go to Device Manager → Adapter properties → Power Management → Uncheck “Allow the computer to turn off this device.” | | Low signal or speed | This is a 2.4 GHz, single-band adapter (max 150 Mbps). Interference is common. Use a USB 2.0 port (not USB 3.0) for stability. | | No 5 GHz support | The chipset doesn’t support 5 GHz – you cannot fix this. |