Open shape
xx0211
Dm7 is the D minor 7 chord. Its notes are D, F, A and C. A softer minor sound. Useful in soul, pop and ii–V–I progressions.
xx0211
x57565
10-12-10-10-10-10
Numbers show frets from the low E string to the high e string; x means don't play that string.
Dm7 is the ii7 chord in C major, the iii7 chord in B♭ major and the vi7 chord in F major. That makes it a natural fit in songs written in those keys.
Every D, F, A and C on the first 12 frets. The filled dots are the root, D. Build your own shape from any nearby group.
Other D chords
Other minor 7 chords