An Ethernet splitter can drop your network speed from gigabit (1000 Mbps) down to just 100 Mbps. For people with slower internet plans, that might not be a huge deal. But if you care about fast file transfers, gaming, or streaming, it can definitely hold you back. The answer is contingent on several factors including the quality of the splitter, how many devices are being connected, and the specifications of your internet service. Splitters essentially. When I try speed test with this setup, I get ~30 Mbps download speeds: [ ]---router---PC [ ]---MoCA device / empty In the above setup, the MoCA device paired at another coax port also got same speeds. However, the 10BASE-T and 100BASE-TX (Fast Ethernet) standards only.