I received both power cords on Friday. I ended up buying both cords Jack Rubin suggested (only about $6.00 each and I didn't want to waste time waiting if the first wasn't correct). I checked the polarity of both cords and the cord # 17952-B1-8 matches the polarity on the Intellec 4. Big thanks to Jack for pointing me to Newark to pick up the cord! And thanks to all others who gave guidance for how to verify the correct polarity. Thanks, Jeff