Datacrons boost your primary stats permanently. This one is +4 presence for me as republic player.
Codex entry: Galactic History 57: The Brotherhood’s Power Grows
Loc: 727, 2033
Head south from the Sundari outpost, across the bridge then head south from the bridge, dont walk along the cliff and if you see a white turret your heading in the right direction.
Click below to see full guide.
Start at Sundari outpost.
Stick to the left side.
Go to the opening, there is a small path that leads farther inside.
Go to the end of the clearing.
End of the small clearing you will find datacron.