The Wireless Handshake Vector
Unlike wired USB peripherals that utilize immediate, hardware-level recognition, wireless accessories rely on the Bluetooth protocol. To establish a secure communication channel between your Mac and a new wireless mouse or keyboard, you must initiate a complex cryptographic handshake. The Mac must actively broadcast a discovery beacon, the peripheral must acknowledge the beacon, and the two devices must exchange a secure pairing key.
How to Connect a Bluetooth Device
Apple centralized the management of this wireless protocol within the primary System Settings matrix.
1. Prepare the Peripheral: You must force the external device (mouse, keyboard, or headphones) into “Discovery Mode.” This usually involves turning the device on, and then pressing and holding a dedicated pairing button until a small LED begins rapidly flashing. Refer to the device’s manual if you cannot locate this button.
2. Initiate the Scan on the Mac:
* Click the Apple Logo in the extreme top-left corner of the screen.
* Select System Settings from the dropdown menu (or System Preferences).
* In the left-hand navigation sidebar, click on Bluetooth.
3. The Handshake Protocol:
* Ensure the master Bluetooth toggle switch at the top of the pane is turned On.
* Look at the “Other Devices” section at the bottom of the window. The Mac is now actively scanning the local airspace. Within five to ten seconds, the name of your peripheral (e.g., “Logitech MX Master”) should appear in this list.
* Hover your cursor over the name of the device and click the Connect button that appears next to it.
4. The Security Challenge (Keyboards Only): If you are connecting a keyboard, macOS will frequently display a random six-digit number on your screen. You must quickly type this exact number on the new Bluetooth keyboard and press Return to mathematically prove you are the physical owner of the hardware.