Nemonixô Engineering, Inc. 84 October Hill Road, Holliston, MA 01746 Phone: 800-435-8650 / 508-429-3660 Fax: 508-429-3338 Electronic mail: info@nemonixengineering.com Website: www.nemonixengineering.com Q: WHERE DO THESE CONTROLLERS PLUG INTO THE SYSTEM A: THE 4000/3000 SERIES CONTROLLERS ARE CDAL CONTROLLERS AND THEY PLUG INTO THE INTERNAL CPU BUS, NOT THE QBUS. THE 6000/7000/10000 SERIES CONTROLLERS ARE XMI SERIES CONTROLLERS AND THEY PLUG INTO THE XMI BUS.