Brother HL-2400Ce Series User Manual page 186

USER'S GUIDE
5-40
5. Insert the NC-3100h connector into the connector between the guide
rails and secure with the two screws.
Fig. 5-49 Installing the NC-3100h Controller
6. Secure the NC-3100h with the Lock Bar.
Fig. 5-50 Securing the NC-3100h with the Lock Bar