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How do 2 in 1 ethernet splitter cables work
I have a modem router combination unit and a seperate router for my computers. The second router is connected by ethernet ports in the wall that connect together. The second router is connected to the modem router through the LAN on the modem router and is plugged to the WAN port on the second router. But since the modem router would have to use two ethernet cables connected to two ports on the wall otherwise, the ISP somehow got a 2 in 1 ethernet cable so that only one port is used on the wall for both the WAN for the modem router and the connection to the second router.
My questions are the following:
1. How is it possible to send two different signals through one cable without an adapter? At least I dont think there is one because it is literally a cable that splits into two with no box for the adapter.
2. How is it possible for one port to be used as both WAN and LAN when there is most likely no second internal apartment modem most likely because normally a second one would not be needed.
3. Will this affect speeds on the second router and the modem router?
Last edited by Computer0304; 15 Aug 2014 at 20:23. Reason: fixed words used to make more sense