If you have an external DIRECTV multiswitch, in other words one that’s not built into the dish, you’ve probably noticed a set of ports on the side marked “Legacy.” There are three legacy ports on the SWM-8, and four on the SWM-16. Chances are, you’ve never had a reason to use them, and maybe just now you’ve gotten bored enough to wonder what they do, so you did a google search and landed here.
The Legacy ports are designed to allow you to use older receivers with your SWM multiswitch. At this point, the number of receivers that still work but aren’t SWM-compatible is pretty slim, since DIRECTV discontinued support for all pre-2003 receivers and started supporting SWM with its 2006 models. Still, even with old receivers breaking and being retired, there are still probably hundreds of thousands of DIRECTV receivers from that three year period. People like to hang onto them because they like the user interface or because they actually own the receiver (DIRECTV moved to a lease model in about 2007.)
That’s what the legacy ports are for. You can plug any receiver into them that’s designed to work with a non-SWM dish and it will work. In fact, it’s an easy way to add a few more receivers to your system, as long as you don’t mind that they won’t be able to share programming.
There are two more reasons to use those ports. Professionals who install the SWM-8 will use the Legacy 3 port connected to the power inserter so that they can use a single 1×8 switch and connect 8 receivers. The SWM-16 has a dedicated power port so the Legacy ports aren’t used that way.
However, if you understand the risks, you can connect a second SWM to the four legacy ports on a SWM-16. It’s called “cascading” and we explain what you’ll need to know in this handy tutorial.