兴趣爱好Convenient Easy-Switch™ buttons make it easy to simultaneously connect with up to three devices via Bluetoothreg; wireless technology and instantly switch among them. To switch to another device on the Logitech K380, I need to press the fn key and then F1/F2/F3 since switching Bluetooth device is already an alternate function. To switch to another device on the Logitech K380, I need to press the fn key and then F1/F2/F3 since switching Bluetooth device is already an alternate function. This version of the K380 has a macOS-specific layout, so the Fn, Control, Option, and Command keys are located where Mac users expect them to be. It’s otherwise identical to the standard K380. More portable options in the multi-device keyboard category include Logitech's Keys-To-Go , a superslim keyboard, and Microsoft's Universal Foldable Keyboard , which folds in half and is even more compact. Both those models are more expensive and good choices if you're looking for a lightweight keyboard to use primarily on the go. Their keys are flatter and not as easy to type with.