My current HD equipment is in my signature. I would like to add an H24 or H25 (whichever they send) to replace the D12 I am currently using. Currently my H23 is connected using the white DECA. Is it correct that the H24/25 have the DECA installed internally and all I would need to do is just install the H24/25 in place of the D12? On occasion I use the H23 in place of the D12 by just moving it and my MRV works fine. I just want to be 100% sure that this can be done and that I won't need an installer. Thanks.