I have an LNB on the dish with two connectors and also another (spare) with four connectors marked Sky MK4L. I had Sky Q, later cancelled it, and now getting it back for self-installation but I can't remember which is the correct LNB. My memory has failed me, (aged 79). I tried using the GZ950 connection for satellite tv but the selection of channels was poor and didn't stay with it. I seem to remember that I was advised to use a wideband LNB which I think is the one that is in place. I think the MK4 was for Sky+. I will be self-installing a new Sky Q UHD HDR box on Wednesday. Any advice is appreciated.