When I installed the DECA's according to our instruction sheet, I had Yellow C.LNK LED's everywhere. After a complete power down of everything and fresh startup, Green C.LNK LED's now appear everywhere. I have not moved the filter to any other location. I moved the H21-200 network connection to Port 2 of the HR21-200 DECA cloud and took the removed DECA(1) unit from the H21-200 and put it on the R22-200 which added it into the DECA cloud. When I first did this, the C.LNK LED on the DECA(4) unit making the up-link to the home network went yellow. This DECA(4) unit is connected to the splitter that feeds the R22-200 also. I pulled power on the R22-100 and rebooted and that fixed the yellow C.LNK on the DECA(4) unit for the up link. DECA Cloud DECA(1): R22-200 (Port 1) DECA(2): HR20-700 (Port 1) DECA(3): *HR21-200 (Port 1) - H21-200 is now plugged into (Port 2) of HR21-200 DECA(4): Linksys 5 Port Switch => Router PI and Splitter Splitter Out 1 => DECA(1) Splitter Out 2 => DECA(4) PI => DECA(4) Now I cannot create some of the yellow C.LNK LED scenarios at will. However, I think that when hooking up a DECA, it seems that if the SAT/DECA cable is attached and then the network cable is plugged in, the likelihood of getting a yellow C.LNK is less.