Servomotor

Servomotors, also known as intermotors, limb motors, movement/balance processors, or servo actuators, were motors used in droids for movement. The droid bounty hunter C-21 Highsinger was equipped with state-of-the-art servomotors that gave him the skills of a martial artist. Servomotors were also used by organic lifeforms, in cybernetic replacements for lost limbs. During a battle aboard the sail barge Khetanna, the back of Luke Skywalker's prosthetic hand got blasted, tearing away the polymer skin and revealing damaged servomotors and wires inside. Decades later, the servomotor was still in use, being used by the bounty hunter Rothgar Deng.