Try the easiest tool to keep your Mac flawless. Free up a ton of space, block malware, and say goodbye to lag. Keep your Mac ready for anything with CleanMyMac.
Notarized by Apple
29 million downloads
4.9 rating
758 "Excellent" reviews
Years of Mac expertise
(2008-2025)
iF Design Award
360° Mac optimization
Average monthly results with CleanMyMac
Junk cleaned
35M GBs
Threats removed
328K
Speed improvements
9.8M
Crush the biggest chunk of unneeded system files, hidden clutter, broken downloads and 20 more types of junk. Get the extra space for the things that matter.
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Disable unnecessary background applications and apps that open automatically on system launch. Don’t let performance drops slow your productivity down.
A single hub for full application management. Remove apps, along with their leftovers, and stay on top of every crucial update.
Detect 99% of malicious software with our proprietary anti-malware engine. Run a Quick, Normal, or a Deep level scan to keep tabs on your privacy and control application permissions easily.
Paying for cloud storage you barely use? Cloud Cleanup shows what’s filling up your cloud accounts, letting you free up room in just a few taps.
Delete duplicates that are eating up precious space. Detect tons of similar images and sort through downloaded files, taking care of them just the way you want.
Build an interactive map of your entire drive and view folders sorted by size. Let Space Lens find the biggest chunks of clutter, so you can tidy up with ease.
If the device shows “Unknown USB Device (Device Descriptor Request Failed)” – check your USB/internal connection or disable fast startup.
The Atheros AR5BBU12 is a Bluetooth 2.1+EDR module found in many legacy notebooks. Since Qualcomm discontinued support, finding a working driver for Windows 10/11 can be frustrating.
If you are here, you are likely experiencing the classic trifecta of legacy Bluetooth problems: , the "Driver is not available" error , or Bluetooth suddenly disappearing after a Windows update . Atheros Ar5bbu12 Bluetooth Driver
. Enter your serial number (SNID) or model (e.g., V5-122P) to find the original Bluetooth driver suite. For Lenovo Devices : Lenovo provides a legacy Atheros Bluetooth Driver for Windows 10 that may work for desktop modules. Method 3: Troubleshoot a Missing/Broken Driver
📥 Download link + step-by-step instructions below. If the device shows “Unknown USB Device (Device
The AR5BBU12 isn't just a standalone Bluetooth chip; it is part of the AR9285 or AR9485 family of wireless adapters. Half Mini PCIe Bluetooth Version: 3.0 + HS (High Speed) or 4.0 Wi-Fi Standard: 802.11b/g/n Compatibility: Primarily Windows 7, 8, and 10 How to Download the Correct Driver
💡 Uninstall the device (check “delete driver”), restart, then run Windows Update. It may pull a working Microsoft inbox driver. If you are here, you are likely experiencing
Commonly identified by hardware IDs such as USB\VID_0CF3&PID_3004 or USB\VID_0CF3&PID_3002 , the AR5BBU12 was prevalent in laptops from the early 2010s, including older Acer, ASUS, Dell Inspiron, and HP Pavilion models. It is based on the Bluetooth 3.0 + HS (High Speed) specification, though many users have successfully operated it under Bluetooth 4.0 driver stacks with limited Low Energy (LE) support.
Wait, what about...
Yes, but there is a free version to test out all of the features. And there is a 30-day money-back guarantee.
CleanMyMac is notarized by Apple as a malware-free application. It deletes only those files that are 100% safe for removal.
We recommend you to start with a Smart Care scan. It performs 5 core actions, letting you deal with issues like junk pile-up or malware threats in a click. You can further explore separate modules to run diverse Mac optimization tasks per your needs.
Get your free CleanMyMac trial here. Download the app, open the .DMG file from your Downloads to install the app, then drag CleanMyMac to your Applications and launch it.
System Requirements:
macOS 11.0+, 320 MB
Min. display size: 1200x800 px
All versions rating:
Pricing:
Starting at $3.35/month
Latest version:
5.3.1, 28 January 2026
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