What is the procedure for USB setup on a Macintosh?

Make sure the printer power switch is on, then double-click the Printer Driver Installer icon and follow the on-screen instructions. Connect the USB interface cable to your Macintosh and then to the printer. Open the Chooser from the Apple menu on the Macintosh, click the HL-1650/1670N icon to select it, and the setup will be complete.