The Duet 3 Motor 23CL (M23CL) is a family of Closed loop, FAN-FD connected NEMA 23 motors, fully integrated in to the Duet 3 ecosystem and work as expansions for Duet3 mainboards such as Duet 3 Mainboard 6HC, Duet 3 Mainboard 6XD and Duet 3 Mini 5+. They optionally integrate a brake to hold the motor in position when power is off. Connection to the Duet 3 CAN-FD bus and power use industrial M8 connectors.
Documentation is here: https://docs.duet3d.com/en/Duet3D_hardware/Duet_3_family/Duet_3_Motor_23CL
As always please discuss this on the Duet3d forum: https://forum.duet3d.com/