• Follow the entire Pairing process of this guide from the Arch Linux wiki.

• There have been issues before with the Intel Bluetooth controllers that come in some of the Beelink computers. If the troubleshooting in the Arch Linux wiki link above doesn't work, try these two commands:

sudo rmmod btusb
sudo modprobe btusb

• If you've already paired with a keyboard before you only need to run this in terminal (lines with # are what you type in):

# bluetoothctl
[bluetooth]#

[bluetooth]# power on
Changing power on succeeded
[CHG] Controller 06:05:04:03:02:01 Powered: yes

[bluetooth]# pairable on

[bluetooth]# scan on
Changing pairable on succeeded

[K380 for Mac]# devices
Device F4:73:35:8E:B1:7F K380 for Mac
Device F4:73:35:93:7F:9D Keyboard K380
Device 71:E3:81:9B:FC:20 71-E3-81-9B-FC-20
Device 54:11:33:FA:24:3F 54-11-33-FA-24-3F
Device BE:16:AE:00:20:F7 MELK-OA10   F7
Device 6B:8C:DD:FC:B1:77 6B-8C-DD-FC-B1-77
Device 5A:55:D8:31:3E:3C 5A-55-D8-31-3E-3C
Device B0:D2:78:B6:47:6D Sbb88cc3eaa738db2C
Device 08:65:F0:3D:89:CA LEDnetWF0200273D89CA

[bluetooth]# connect F4:73:35:8E:B1:7F
Attempting to connect to F4:73:35:8E:B1:7F
Connection successful