I finally got the small keyboard I've always wanted, one that works with any device without the need for a tambourine dance, and I paired it with a single MX Anywhere 2 mouse (which, yes, can also function with three devices through Bluetooth). It turns out to work with any device as with a full-fledged PC, with the only difference being the size of the screen; I have a tablet, a phone, and a computer; the main computer is functional, the tablet is an auxiliary for personal mail, and the phone is fine for chats, vatsapiks, and other SMS ok. Not having a Bluetooth adaptor is not a big deal in this day and age, when even televisions are equipped with the technology. If someone objects to the use of an adapter, it's clear that the computer in question has reached the end of its useful life and must be replaced. In addition, I've never had any issues entering the BIOS with this keyboard; perhaps this is because the BT support is integrated into the motherboard itself, rather than requiring a separate USB dongle. In conclusion, if you have up-to-date technology such as Bluetooth and Wi-Fi and are looking for a tiny, convenient PC peripheral, you can do it with complete confidence. It's possible that issues will occur otherwise.