The HR24s are smaller, faster, have built in Deca, and have larger hard drives.
DECA is used in conjunction with the SWiM LNB, SWM8 or SWM16 to give receivers access to the internet through the coax coming from the SWM switch.rbpeirce said:My HR20 is connected to the internet through the ethernet port on the back. How is DECA different? Is it a device that plugs into the ethernet port and why is it necessary?