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Technical Guide: Broadcom BCM94313HMGB on Windows 10 64-Bit

6. Ultimate Verdict – Replace the Card?

The BCM94313HMGB is obsolete for modern Windows 10/11 usage.

No official Win10 driver from Broadcom.
No 5 GHz band → crowded 2.4 GHz only.
No Bluetooth.
Poor performance on modern routers.

If you experience frequent disconnects or slow speeds, replace it with:

Intel 7260HMW (Wi-Fi 5 + BT 4.0, Mini PCIe)
Atheros AR5B22 (better open-source support)
Broadcom BCM943228HMB (dual-band, still legacy)

These cost ~$10–15 used and work natively with Windows 10. broadcom+bcm94313hmgb+driver+windows+10+64bit+link

Example search terms

broadcom bcm94313hmgb driver windows 10 64-bit
bcm94313hmgb driver download official
broadcom 802.11 driver windows 10 64-bit

Step 1: Try Windows 8.1 Drivers (Most Likely to Work)

Windows 10 will reject the original Windows 7 drivers. You need to manually force an 8.1 driver.

Download the Broadcom BCM94313HMGB Windows 8.1 64-bit driver from a reputable driver archive (e.g., Station-Drivers, Lenovo/HP support for old laptops that used this card – search for "BCM94313HMGB 8.1 driver").
Extract the ZIP folder.
Disable Driver Signature Enforcement (temporarily):
- Restart PC → Press Shift while clicking Restart → Troubleshoot → Advanced Options → Startup Settings → Restart → Press 7 (Disable driver signature enforcement).
Open Device Manager → Find the unrecognized or error-marked Broadcom device under Network adapters or Other devices.
Right-click → Update driver → Browse my computer → Let me pick → Have Disk.
Browse to the extracted folder (look for a .inf file, likely bcmwl63a.inf).
Select the Broadcom 802.11n Network Adapter and install.
Reboot normally.

Method 2: Manual Installation via Device Manager

This is the most reliable method for this specific card. You will need the driver files (often labeled for Windows 7 or 8, but fully compatible with Windows 10). Technical Guide: Broadcom BCM94313HMGB on Windows 10 64-Bit

Step 1: Download the Driver You can often use the HP Broadcomm Wireless LAN driver (sp56911.exe or similar) which works for this chipset across different laptop brands.

Search Query: Broadcom BCM4313 Wireless LAN Driver Windows 10 64-bit
Alternative Source: Softpedia or Broadcom legacy archives.

Step 2: Extract the Files If the driver downloads as an .exe file, do not run it directly if it fails. Instead: No official Win10 driver from Broadcom

Right-click the .exe file and select "Extract files..." (You may need WinRAR or 7-Zip).
Extract the contents to a folder on your desktop.

Step 3: Force Install

Right-click the Start button and select Device Manager.
Look for Network adapters. If the card is not installed correctly, it may appear under Other devices with a yellow exclamation mark.
Right-click the device (it might be named "Broadcom 802.11n Network Adapter" or "Unknown Device").
Select Update driver.
Choose "Browse my computer for drivers".
Click Browse and navigate to the folder where you extracted the driver files in Step 2.
Ensure "Include subfolders" is checked, then click Next.
Windows will locate the .inf file and install the driver.