guitar chord
A♭7sus4
A dominant seventh with the fourth standing in for the third.
Written the other way round it is G♯7sus4 — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
444644
moderate · barre
464644
moderate · barre
44464x
moderate · barre
46464x
moderate · barre
444674
moderate · barre · no 5
What is true of it
A♭7sus4 is A♭, D♭, E♭ and G♭ — 1, 4, 5 and b7 counted from A♭.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 444644: 2 fingers, one of them barring the 4th fret, held at the 4th fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
Where its notes are on the neck
The brass dots are A♭, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
A♭7sus4/D♭
x44644
A♭7sus4/E♭
bbbbxx
A♭7sus4/G♭
xx4644
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.