The R88M-U[][][]30H Servomotor's power supply cable outlet was bare, but the R88M-U[][][]30HA Servomotor's power supply cable outlet has a Servomotor cable clamp mounted in order to reinforce the connection.

The electrical characteristics have not changed, but the dimensions of the R88M-U[][][]30HA Servomotors are larger in the clamp area only.