Barre chord
fret 4, A shapex46674
C♯sus4 is the C♯ suspended 4 chord. Its notes are C♯, F♯ and G♯. It is the same chord as D♭sus4. The fourth replaces the third. Resolve it down to the third for a familiar release.
x46674
9-11-11-11-9-9
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every C♯, F♯ and G♯ on the first 12 frets. The filled dots are the root, C♯. Build your own shape from any nearby group.
Other C♯ chords
Other suspended 4 chords