Any Logitech device that supported both Bluetooth and Unifying, such as the MX Master, allowed you to cycle through up to stored 3 connections of either type. T

Any Logitech device that supported both Bluetooth and Unifying, such as the MX Master, allowed you to cycle through up to stored 3 connections of either type. The older, cheap devices generally only had a single connection. Logitech also makes or made keyboards with 1-2-3 hot swap keys that allowed quick switching with a single press.