guitar chord
A♭m7
Minor triad with a minor seventh. The same four notes as a major sixth chord a third above.
Written the other way round it is G♯m7 — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
464444
moderate · barre
46440x
moderate · barre
464407
moderate · barre
46444x
moderate · barre
42440x
hard · no 5
What is true of it
A♭m7 is A♭, C♭, E♭ and G♭ — 1, b3, 5 and b7 counted from A♭.
These are also the notes of B6/A♭. Which name is right depends on what is underneath and what came before — the notes alone do not decide.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 464444: 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.
4 of the 5 need a barre.
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♭m7/C♭
x21102
A♭m7/E♭
xx1102
A♭m7/G♭
22110x
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.