How to Add Bluetooth to Your PC

The fastest way depends on what you already have

Most modern PCs come with Bluetooth built in, so check whether yours works before you buy anything. On Windows, open Settings, go to Bluetooth & devices, and toggle Bluetooth on. If you see "Bluetooth is on" and a list of devices you can pair with, you're done — you already have it. On a Mac, click the Apple menu, go to System Settings, then Bluetooth, and toggle it on.

If Bluetooth doesn't turn on, or if you see "No Bluetooth adapter found", your PC doesn't have a built-in radio. In that case, you have two options: buy a USB Bluetooth adapter (the cheapest route, around $10 to $30) or replace your wireless card (more involved, but permanent). Which one makes sense depends on your PC type and how much you want to spend.

Key Takeaways

Check Settings on Windows or System Settings on Mac first — many PCs have Bluetooth already, and you just need to turn it on.
A USB Bluetooth adapter plugs into any USB port and works immediately on Windows and Mac without drivers for most models.
Replacing your wireless card requires opening your PC and is only worth it if you use Bluetooth constantly and want a permanent solution.
After you plug in an adapter or enable built-in Bluetooth, put your device in pairing mode and select it from the Bluetooth menu to connect.

Checking if your PC has Bluetooth already

Open Settings on Windows by pressing the Windows key and typing "Settings", then click the app. Go to Bluetooth & devices on the left side. If you see a toggle for Bluetooth and it's currently off, click it to turn it on. Wait a few seconds — you should see "Bluetooth is on" appear, and below that, a list of available devices to pair with. If this happens, your PC has Bluetooth and you're ready to pair devices.

On a Mac, click the Apple menu in the top left, select System Settings, then click Bluetooth in the sidebar. If you see a toggle and it's off, click it. You should see "Bluetooth: On" and a list of nearby devices. If either of these steps works, you have built-in Bluetooth and don't need to buy anything.

If the toggle doesn't appear, or if you see a message like "No Bluetooth adapter found" or "Bluetooth is not available", your PC doesn't have a Bluetooth radio. This is more common on older desktops and budget laptops. Move to the next section to add one.

Using a USB Bluetooth adapter

A USB Bluetooth adapter is a small dongle that plugs into any USB port on your PC. It costs between $10 and $30, and most work on both Windows and Mac without needing you to install drivers first. Popular models include the TP-Link UB400, the Plugable USB-BT4LE, and the Avantree DG40S. You can find them on Amazon, Best Buy, or Newegg.

Plug the adapter into an open USB port — it doesn't matter which one. On Windows, go back to Settings > Bluetooth & devices and toggle Bluetooth on. The adapter should be recognized automatically, and you'll see "Bluetooth is on" within a few seconds. On a Mac, go to System Settings > Bluetooth and toggle it on. Again, it should turn on without any extra steps.

Once Bluetooth is on, put the device you want to connect (headphones, mouse, keyboard, speaker) into pairing mode. This usually means holding a button on the device for a few seconds until a light blinks. Then, in the Bluetooth menu on your PC, you should see that device listed. Click or select it, and it will pair. You may see a prompt asking you to confirm the pairing — just click yes or confirm.

Replacing your wireless card for permanent Bluetooth

If you use Bluetooth constantly and want a solution that doesn't take up a USB port, you can replace your PC's wireless card. This is only practical on desktop PCs and some laptops — many modern laptops have the card soldered in place and can't be upgraded. Before you try this, check your PC's manual or search "[your PC model] wireless card replacement" to see if it's possible.

If replacement is possible, you'll need to open your PC's case, locate the wireless card (usually a small rectangular module with two antenna connectors), unscrew it, and slide in a new one. Cards with Bluetooth built in cost $20 to $60. Popular models include the Intel AX210 and the TP-Link Archer T5E. After you install it, Windows or Mac will recognize it automatically, and you can turn Bluetooth on in Settings or System Settings just like a built-in adapter.

This route takes 15 to 30 minutes if you're comfortable opening your PC, and it voids the warranty on some machines. If you're not sure whether your PC can be opened or how to do it safely, a USB adapter is the simpler choice.

Pairing your first device

Once Bluetooth is on, put your device into pairing mode. For most headphones and speakers, this means holding the power button or a dedicated pairing button for 3 to 5 seconds until you see a light blink rapidly or hear a tone. For a mouse or keyboard, look for a small pairing button on the bottom or back — hold it for a few seconds. Check your device's manual if you're not sure.

While your device is in pairing mode, open the Bluetooth menu on your PC. On Windows, go to Settings > Bluetooth & devices, and you should see your device listed under "Available devices". Click it. On a Mac, go to System Settings > Bluetooth, and your device should appear in the list. Click the "Connect" button next to it. Your PC may ask you to confirm the pairing — click yes or confirm. Within a few seconds, the device should show as "Connected" or "Paired".

Troubleshooting when Bluetooth won't turn on

If Bluetooth won't turn on in Settings, the first step is to restart your PC. Many Bluetooth issues clear up after a restart. After your PC boots back up, go to Settings or System Settings and try toggling Bluetooth on again.

If it still doesn't work on Windows, open Device Manager by pressing the Windows key and typing "Device Manager". Look for "Bluetooth" in the list. If you see it with a yellow warning icon, right-click it and select "Update driver". Windows will search for the latest driver and install it automatically. If Bluetooth isn't listed at all, your PC doesn't have a Bluetooth adapter, and you'll need to buy a USB one.

On a Mac, restart your Mac and try again. If Bluetooth still won't turn on, go to System Settings > General > About and check that your Mac is fully updated. If it's not, install the latest update and restart. If Bluetooth still doesn't work after an update, your Mac may need service — contact Apple Support or visit an Apple Store.

Connecting multiple devices at once

Most Bluetooth adapters and built-in radios can pair with many devices, but they can only actively connect to a few at the same time. On Windows and Mac, you can usually have one headset, one mouse, and one keyboard connected at once without issues. If you try to connect a fourth device, one of the others may disconnect.

If you need more devices connected simultaneously, you have two options. First, you can buy a second USB Bluetooth adapter and plug it into a different USB port — each adapter works independently. Second, you can disconnect a device you're not using by going to Bluetooth settings, finding the device, and clicking "Disconnect" or "Forget". The next time you want to use it, put it in pairing mode again and it will reconnect quickly.

Frequently Asked Questions

Do I need to install drivers for a USB Bluetooth adapter?

Most USB adapters work without drivers on Windows 10 and later, and on any recent Mac. If your adapter doesn't show up in Bluetooth settings after you plug it in, check the box it came in for a driver disc or a link to download drivers from the manufacturer's website. Older adapters sometimes need this step.

Can I use Bluetooth on a desktop PC without opening it?

Yes. A USB Bluetooth adapter is the easiest option for a desktop — just plug it into any USB port. You don't need to open the case or install anything. If you want a permanent solution later, you can always replace the wireless card, but a USB adapter works fine on its own.

Why does my Bluetooth device keep disconnecting?

Bluetooth range is usually 30 feet in open space, but walls and metal objects reduce it. Move closer to your PC. If the device still disconnects, try moving your PC away from other wireless devices like routers or microwaves — they can interfere. If disconnections continue, the adapter or device battery may be failing. Try pairing the device with a different PC to see if the problem follows it.

What's the difference between Bluetooth 4.0, 5.0, and 5.3?

Newer versions are faster and have longer range, but the difference is small for everyday use like headphones or mice. Bluetooth 5.0 and 5.3 adapters are common and work fine. Older 4.0 adapters still work, but they're slower. If you're buying a new adapter, look for 5.0 or 5.3 — they cost the same as older versions.

Can I use a Bluetooth adapter on a Mac and Windows PC at the same time?

A single USB adapter can only connect to one PC at a time. If you want to use Bluetooth on both a Mac and a Windows PC, you need two separate adapters, one plugged into each machine. Your Bluetooth device can pair with both adapters, but it will only connect to whichever PC is currently in range and has Bluetooth on.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.