The standard grips this chord is usually shown with.
Eb5 is Eb and Bb, a power chord. The shape this page opens on is written x68xxx, lowest string first.

Also written Eb(no 3rd) or Eb power chord. The same chord either way; which spelling you meet depends on who wrote the chart.
There are 2 common shapes for Eb5 on the guitar, and 22 derived voicings in the triad family.
In which keys. Every note of Eb5 belongs to C minor (the ♭III), C# major (the ii), Eb major (the I), Eb minor (the i), F minor (the ♭VII), F# major (the vi), G minor (the ♭VI), Ab major (the V), Ab minor (the v), Bb major (the IV), Bb minor (the iv) and B major (the iii).
The common shapes, written lowest string first: x68xxx, 11-13-13-x-x-x.
Triad. Three notes across one string set. Eb5 has x113xx, x688xx, 668xxx, 6688xx, 11-13-13-x-x-x, x-13-13-15-x-x, xx134x, x1134x.
The common shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.