A: USB port voltage. The BT-05 draws minimal power, but some front-panel USB ports on old PCs fail to initialize it. Plug it directly into a motherboard USB port on the back.
The is a nano-sized USB Bluetooth 5.0 dongle designed to add wireless connectivity to PCs and laptops. It is primarily a "plug-and-play" device for modern Windows systems, though older operating systems may require specific driver software for full functionality. Key Hardware Features driver bluetooth m-tech bt-05
If Windows didn't install the driver automatically, the BT-05 most likely uses the or Broadcom generic chipset. A: USB port voltage
Disclaimer: Always scan downloaded driver files with updated antivirus software. The author is not responsible for damage caused by third-party driver files. The is a nano-sized USB Bluetooth 5
Notes:
: Ensure "Bluetooth" is toggled On in your Windows Settings (Settings > Devices > Bluetooth).
Windows 10 has a built-in inbox driver that sometimes works if you force it.