Here's some information about this particular motor:

Model: R88D-KN04H-ML2

Motor Type: AC servo motor

Frame Size: N04 (40 mm)

Power Rating: The power rating of the motor can vary. Please refer to the specific datasheet or product documentation for detailed power specifications.

Feedback Device: The ML2 designation in the model number indicates that this motor uses encoder feedback for position control and feedback.

Communication: The R88D-KN04H-ML2 motor is designed to work with Omron's SYSMAC series of controllers and supports various communication protocols such as EtherCAT and Mechatrolink-II.