Chord Asus2 notes: A, E, A, B and E. You should not play the 6th string.
The strings 5(A), 2(B) and 1(E) are left open.
Asus2 - A suspended 2nd guitar chord is often noted with non-standard names like A5add2, A2(no3) or A2. Sometimes it's referred to as Aadd9(no3).
1(A), 2(B), 5(E).