Got it yesterday early afternoon. Ive been messing with the cable co (mediacom) trying to get the XL4 to pair with their cable cards. Ive got a stack of them and none will work to authorize channels despite multiple signals being sent by the cable company. The XL4's tuners must be picky about the signal strength. It wont work in my basement at all with the QAM channels that come through the cable unencrypted, but works in one of my outlets upstairs. My S3 HD XL has been hooked up in the basement with no issues for over 2 years. Cable guy coming tomorrow morning (didnt know they worked on sunday) and if he cant get it to work, its getting packed up and going back. Hopefully it all ends well, i'd love to have those 4 tuners but i dont have much patience for wasting time on something that should work out of the box.