The Db9 sus 4 chord (Db9 suspended 4, or Cb/Db) contains the notes Db, Gb, Ab, B and Eb. It can be thought of as a Db9 chord with a 4th (instead of a 3rd) or a Cb chord (same as B) with a Db in the bass.

10 Ways To Play The Db9 Sus 4 chord

If you’ve come to this page just to view some chord diagrams for Db9 Sus 4 (Cb/Db), here they are.

Db9 Sus 4 Chord 10 Shapes