There are several ways to play any one chord. Each chord has a specific set of notes. The different ways to play the same notes are called “voicings”. For this example we are using “A major”. The A major chord consists of an A, a C#, and an E. Any combination of these 3 notes will make an A major. Learning as many “voicings” for each chord adds more diversity to your playing. Shown below are 5 different ways to play A major just using the top 4 strings.
For some more A chord voicings click here.