Every fingering that fits a hand
6004
easy · no 5
6003
easy · no 5
x103
open · no 5
6047
easy
6403
easy · no 5
What is true of it
D♭m(maj7) is D♭, F♭, A♭ and C — 1, b3, 5 and 7 counted from D♭.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 6004: 2 fingers, held at the 4th fret.
1 of them use open strings, which is what makes a shape quiet to change to.
It leaves out the 5. 4 strings cannot carry 4 notes, and the 5 is the one this chord can lose without changing what it is.
Where its notes are on the neck
The brass dots are D♭, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
D♭m(maj7)/F♭
9c9b
D♭m(maj7)/A♭
1004
D♭m(maj7)/C
x004
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.
D♭ in other shapes
Cm(maj7)Dm(maj7)D♯m(maj7)E♭m(maj7)Em(maj7)Fm(maj7)F♯m(maj7)G♭m(maj7)all 374