How to Check Whether Your Windows 10 PC Has Bluetooth 4.0

Use Device Manager to read the Bluetooth radio’s Link Manager Protocol (LMP) value. If its LMP version is 6, the adapter supports Bluetooth Core 4.0; a higher LMP number maps to a newer Core specification. This checks the adapter Windows is using, not the Bluetooth version of a mouse, headset, or other accessory.

Bluetooth Core 4.0 introduced Bluetooth Low Energy (LE), which is used by many sensors and other low-power devices. The version check is useful when a peripheral requires Bluetooth 4.0 or newer, but an LMP value alone does not guarantee that a particular app or device service will work. Check the peripheral maker’s requirements if you need a specific feature.

Check the Bluetooth adapter’s LMP version

1. Open Device Manager. Right-click Start or press Windows key + X, then choose Device Manager. You can also type “Device Manager” in the taskbar search box and open the result.

   

2. Expand Bluetooth and identify the radio. Select the arrow beside Bluetooth. Look for the adapter entry with a hardware maker’s name, such as Intel, Realtek, or Qualcomm. The exact name varies by PC. Microsoft says the radio is not the Microsoft Bluetooth Enumerator, Microsoft Bluetooth LE Enumerator, or a “Bluetooth Device (RFCOMM Protocol TDI)” entry.

   

3. Open the adapter’s properties. Right-click the manufacturer’s Bluetooth radio and choose Properties. Select the Advanced tab. If you do not see that tab, go back and make sure you opened the radio rather than an enumerator.

   

4. Read the firmware field. In Bluetooth Radio Information, find Firmware Version and note the number after “LMP.” For example, LMP 6.1280 has an LMP version of 6; the digits after the decimal do not change the Core version mapping.

   

What the LMP number means

Microsoft’s version chart maps the LMP number to the Bluetooth Core specification. For this check, the key threshold is LMP 6:

Microsoft describes the LMP value as the highest Bluetooth Core specification the Windows device fully supports. An accessory with a higher specification may still connect, but some features can be limited. Bluetooth 4.0 is not the same as Bluetooth 4.0 LE in every software context: the adapter, its driver, and the app must expose the capability the accessory needs. The Bluetooth SIG’s Core specification history lists Low Energy among the features introduced in Core 4.0.

If Bluetooth or the LMP field is missing

A missing Microsoft Bluetooth LE Enumerator entry is not a reliable way to decide whether the radio supports Bluetooth 4.0. Use the LMP field on the manufacturer’s radio instead. If Device Manager has no Bluetooth category, that alone also does not prove the PC has no Bluetooth hardware: the radio may be disabled, not detected, or missing a driver. Check the PC specifications and look under Other devices for an unknown adapter. On laptops, check any physical wireless switch or function-key control.

1. Ask Windows to look for an adapter driver. In Device Manager, expand Bluetooth, right-click the radio, choose Update driver, and select Search automatically for drivers. Follow the prompts, then restart if Windows asks.

   

2. Check Windows Update. Open Start > Settings > Update & Security > Windows Update and select Check for updates. Install relevant available updates and restart the PC.

   

3. Check the PC maker’s support page. If Windows says the best driver is already installed, search the computer maker’s support site by the exact PC model and install a Bluetooth driver listed for Windows 10. Avoid driver download sites that are not the PC or adapter manufacturer.

   

Microsoft ended standard support for Windows 10 on October 14, 2025. The PC can still run, but Windows 10 no longer receives Microsoft’s free software updates, technical assistance, or security fixes through the normal support cycle. The LMP check still tells you what the installed radio reports; if the driver is missing, the computer or adapter manufacturer is the best place to check for a compatible package. A driver update cannot add Bluetooth Low Energy to radio hardware that does not support it.

For the official steps and full LMP chart, see Microsoft’s guide to checking the Bluetooth version on a Windows device and its instructions for updating Bluetooth drivers. Microsoft also explains Bluetooth Low Energy in Windows.