What is the Switch of Master device (ASYM/SYM) for?
Switch mode can be adjusted linking at HomePNA (ASYM) status or VDSL(SYM) status. For the HomePNA (ASYM) mode, it provides 3M upstream and 10M down stream speed. It will extend 4000 feet with 0.4mm cable. For the VDSL (SYM) mode, it provides 10M upstream and 10M downstream. It will extend 4000 feet with 0.4 mm cable. Both of them, the distance will change by the quality of cable.