What I understand from your post, is that you would like to know if it's possible to connect more than one SlingLink to the 4-Port SlingLink.
You can try to make the connection, however, please note that both SlingLinks needs to be connected to the same electrical circuit, then you might consider to get 2 separate SlingLinks set.
The single port comes with two units with a single Ethernet jack.
The 4 Port SlingLink comes with two boxes, 1 with 4 ports and the other one with a single Ethernet jack.
The more I read, the more confused I get . . . .
This may be similar to the question above.
I bought a slinglink package with a one-port unit and a four-port unit.
I installed the one-port next to my router, then installed the four-port in the next room where my TV and Slingbox are.
I installed my Slingbox HD on the four-port slinglink, and now I have three more ports to put a game console or computer if I wish.
Everything works fine. (Thanks)
NOW, the wife wants to install an internet device (Wii) next to a TV in a THIRD room.
My solution is to install a one-port slinglink unit in the third room. BUT, I understand from reading these Q/A's that you must be certain that the slinglink units are on the same circuit, but I think that's impossible.
Somebody asked about the difference between a SlingLink and a SlingLink "W1", and the answer was that the W1 model did not have to be on the same circuit.
So, my question (finally) is:
If I install a one port SlingLink W1 in the third room to provide the necessary internet connection, will it work OK with the other one-port and four-port, or do they have to be W1 also?