I've owned/used several wireless keyboards over the years (all but a few being Logitech), including a few "multi-device" keyboards. Through personal experience, I've had to deal with numerous problems - keyboards constantly disconnecting/reconnecting; ghost "stuck keys" where the physical key isn't actually stuck, but the keyboard continuously sends a signal as if the key is pressed; keyboards that claim to be compatible with any Android device, but actually aren't. I could continue pointing out problems, but those reading this should get the picture, and those who have used wireless keyboards...especially Bluetooth keyboards...understand what I'm referring to.
The funny thing about this...in a sad way...is that I had considered the K480 a while back, but dismissed it due to its price. Well, as is said fairly often, “You get what you pay for.” The Logitech "Tablet Keyboard for Android 3+" was good, but could only connect to my cell phones & tablet. While I really liked the keyboard's case doing double-duty as a tablet stand, that couldn’t make up for its inability to connect with non-Android devices. Additionally, it had an ongoing “ghost stuck key” problem, making it relatively useless. Two other keyboards purchased through Amazon (one cheap, the other costing as bit more) were true multi-device keyboards, but both had markings specific to a single device (on the cheap keyboard), or only two device types (Windows & Android on the more costly keyboard). While the more costly keyboard did connected to the MacBook, its lack of Apple-specific markings wasn’t its only downfall – its disconnect/reconnect problem was worse than that of the Logitech keyboard mentioned above.
Now...moving to Logitech's K480, this is the first wireless keyboard that I've had which is TRULY multi-device compatible. To start with, it has Windows, Mac, & Android markings, completely taking away any guesswork from the previous keyboards. Second, it connects to all three device-types, without fail. In testing it, I’ve had it connected to my Windows laptop, both of my Android tablets (Samsung & Asus), my Samsung phone, and the church's MacBook Pro (ok, with the MacBook, it has disconnected/reconnected, but very rarely…but it always connects initially without fail). In terms of switching devices on the fly, I've had it simultaneously connected to the MacBook, my cellphone, and one of my tablets (honestly, I was trying to remember whether it was the Asus, or Samsung, but I couldn't recall), and switching keyboard control from any one device, to another, is as simple as turning the dial...and it ALWAYS functions correctly.
My ONLY complaint is the neon yellowish-green rubber on the dial, and in the tablet stand. While I’d have preferred blue, white, gray, and even black, would have been far more acceptable. I do realize that Logitech used to make a white version, with gray rubber pieces, but it was aimed primarily at Mac users, and has since been discontinued. You can find a few online retailers carrying refurbished units, but, if you want a new unit, you’ll be hard-pressed to find it…thus, the only realistic choice is the black with neon yellowish-green. Ignoring my one complaint, you will NOT find a better multi-device wireless keyboard. True, it’s not a full-size keyboard, but, if you have need of such, then you should really be sticking with a wireless keyboard designed for one specific type of device. On the other hand, if you have need of a multi-device wireless keyboard, to be used with different device types, then the Logitech K480 will not only be your best choice…it should be your ONLY choice.