Hello: I did a little searching and it appears that the HR24 has DECA built-in. However, it wasn't clear as some of the other members appeared to be using the adapter instead of the CCK. I'm just looking for confirmation if I need it for my setup. I have 4 HD-DVRs (HR21, HR22, HR22, HR23) and the CCK. All the receivers are using the white DECA adapters (DECA1MR0-01) as I have whole-home DVR service. The HR23-700 bit the dust and DirecTV sent out a HR24-500 as its replacement. It's my understanding that the white DECA adapter used on the existing HR23 is no longer needed for the HR24 replacement. Is that correct? Thanks.