From Starfield Wiki
|EM weapons are generally employed to damage robots, but can also be used to render human beings unconsious.|
Incapacitation is unlocked by spending a total of 4 skill points in the Combat skill tree.
- An incapacitated enemy will be awakened upon receiving any damage, but will still take a moment to get up. As such, stunning an enemy, bashing them with a gun, and then stunning them again while they're trying to get up will let you level the skill quickly and quite safely if the other enemies in an area have already been dealt with.