CSS3 Media Types: "All" devices vs non-defined

Question

Is there any difference between:

@media all and (min-width: 480px) {
    ...
}

and

@media (min-width: 480px) {
    ...
}

Answer 1

From https://www.w3.org/TR/css3-mediaqueries/ (W3C Recommendation 19 June 2012)

I.e. these are identical:

@media all and (min-width:500px) { … }
@media (min-width:500px) { … }