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Using a Bluetooth keyboard in UEFI - X570 Taichi

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=12753
Printed Date: 06 Feb 2025 at 3:00am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Using a Bluetooth keyboard in UEFI - X570 Taichi
Posted By: Ultranium
Subject: Using a Bluetooth keyboard in UEFI - X570 Taichi
Date Posted: 27 Oct 2019 at 7:51pm
I have a X570 Taichi motherboard and a Surface Ergonomic Bluetooth keyboard.

Since the motherboard has onboard Bluetooth, I thought the keyboard could be used in UEFI too, but it doesn't seem to be working until Windows is loaded.

Is there any way to make it work? I have HDD passwords set in BIOS so I have to enter them on each boot, and the only way for it now is to have a separate corded keyboard, this is very inconvenient.



Replies:
Posted By: Ray62
Date Posted: 27 Oct 2019 at 10:41pm
Common for all mainboards with BT:
The Bluetooth in the BIOS just initializes the hardware but has no protocol stack for it. Bluetooth requires drivers and utilities to manage the connection, neither of which are available in the BIOS.

If you want to use your BT keyboard in the bios, you cannot use the onboard BT.
If you find a "Bluetooth USB Dongle" that is able to provide USB HID support (aka "HID Proxy"), then you may be in luck, otherwise, I'd suggest it's not possible.

HID Proxy mode works by running a minimal Bluetooth stack on the dongle - it then enumerates as a USB "Human Input Device" instead of a "Bluetooth Radio"... this minimal stack is able to communicate with a paired keyboard / mouse, and interpret their input such that as far as the PC knows, a basic wired USB input device is connected.


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