MSI PRO B650-S WIFI: missing Wi-Fi or LAN after Windows setup

Match PRO B650-S WIFI exactly

The letter S is part of the product name. PRO B650-S WIFI, PRO B650M-A WIFI and B650 GAMING PLUS WIFI have separate support pages. A download for another AM5 motherboard is not the starting point.

MSI documents Realtek 8125BG 2.5G LAN, Wi-Fi 6E, Bluetooth 5.3 and Realtek ALC897 audio for PRO B650-S WIFI. Its product datasheet describes the wireless solution as AMD Wi-Fi 6E. That does not mean that the AMD chipset installer contains the wireless driver.

Use the support categories deliberately

Open the official driver link below, choose Drivers if MSI opens another support tab, and select the Windows version installed on the PC. Read the package description before downloading.

• Missing wired connection: use the LAN category for the Realtek Ethernet controller.
• Missing Wi-Fi: choose the wireless package matched to the actual adapter.
• Missing Bluetooth: check the separate Bluetooth package even if Wi-Fi already works.
• Unknown platform devices after installing Windows: review AMD chipset drivers.
• Rear analogue audio missing: review the motherboard audio package.

The driver list can change. This guide deliberately links to MSI's model page rather than naming a permanently “latest” ZIP file. Keep the package name and version in your troubleshooting notes.

Get an offline PC connected

Prepare a USB drive on another computer with the correct network package. Copy the downloaded archive, extract it on the new PC and run the supplied installer according to MSI's instructions. Restart when requested and inspect Device Manager.

If the Ethernet driver is already working, a temporary cable connection is another way to obtain the wireless package. Neither MSI Center nor an online automatic installer helps if the computer still has no usable network connection.

Do not treat Windows detecting Bluetooth as proof that the Wi-Fi driver is installed. Check each function separately. If the wireless adapter is unnamed or the installer cannot find compatible hardware, open the device's Properties > Details > Hardware Ids and compare that identity with the download description.

Separate a missing adapter from a missing 6 GHz network

Once the adapter appears without a device error, check antenna attachment, Windows Wi-Fi controls and nearby network visibility.

MSI's specification makes 6 GHz availability dependent on Windows 11 and regional rules. The router must also provide a compatible 6 GHz network. A working connection on 2.4 GHz or 5 GHz, with no 6 GHz network visible, is a different problem from Windows failing to enumerate the adapter.

If setup still fails, report the exact model, Windows version, adapter hardware ID, driver package and Device Manager status. Those details help distinguish a package mismatch from a hardware or connection fault without repeated blind reinstalls.