Hello, the set is sold with a single USB dongle that drives the keyboard and mouse on a single computer. If you wish to have a dongle for the mouse and another dongle for the keyboard, you will need to buy both separately.

thank you all for the answer :-) Ciao philip

The keyboard and mouse use the same dongle, so only one dongle

Why two?
Everything also works with one 😉👍🏼

Oh, sorry . One dongle only

Yes .