# AV53C1-USB-BLUETOOTH External Antenna 100 m Class 1 on a MacOS 15.5 MacBook M2

**URL:** <https://community.startech.com/t/av53c1-usb-bluetooth-external-antenna-100-m-class-1-on-a-macos-15-5-macbook-m2/1727>\
**Category:** Networking, Serial, Bluetooth\
**Tags:** macos\
**Created:** [July 13, 2025, 7:50pm UTC](https://community.startech.com/t/av53c1-usb-bluetooth-external-antenna-100-m-class-1-on-a-macos-15-5-macbook-m2/1727 "2025-07-13T19:50:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gaitskell](https://avatars.discourse-cdn.com/v4/letter/g/4af34b/32.png) [@Gaitskell](https://community.startech.com/u/Gaitskell)\
**Post date:** [July 13, 2025, 7:50pm UTC](https://community.startech.com/t/av53c1-usb-bluetooth-external-antenna-100-m-class-1-on-a-macos-15-5-macbook-m2/1727/1 "2025-07-13T19:50:21Z")

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How do I select the new added StarTech USB Bluetooth Controller on macOS 15 (Sequoia, Apple Silicon)? The modern OS GUI doesn’t seem to provide a way to select it, and I can’t find a Terminal command that will work. My thanks.

StarTech AV53C1-USB-BLUETOOTH  
External Antenna unto 100 m Class 1  
on MacOS 15.5 MacBook M2

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**Author:** ![LukasT](https://yyz2.discourse-cdn.com/flex012/user_avatar/community.startech.com/lukast/32/22_2.png) [@LukasT](https://community.startech.com/u/LukasT)\
**Post date:** [July 14, 2025, 6:00pm UTC](https://community.startech.com/t/av53c1-usb-bluetooth-external-antenna-100-m-class-1-on-a-macos-15-5-macbook-m2/1727/2 "2025-07-14T18:00:58Z")

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Hello @Gaitskell,

Thank you for posting on the [Startech.com](http://Startech.com) community!

Our AV53C1-USB-BLUETOOTH is only supported with Windows and Linux operating systems, and is unfortunately not supported with MacOS, as seen in our [technical specifications](https://www.startech.com/en-us/networking-io/av53c1-usb-bluetooth#technical-specifications). If you are within the return period with where you purchased the adapter, I would recommend returning it if you do not have anywhere else that you could use it.

For an alternative adapter that would be compatible with MacOS 15, I would recommend our USBBT1EDR4. However please not that this adapter is Bluetooth 4.0 instead of 5.3 and has a maximum range of 50m (165ft).

I apologize for the confusion. If there is anything else we may be able to help with, please let us know.

Lukas T