I currently have a modem/router combo device from Verizon (the Verizon MI424WR rev. I) which I have placed in my office at one end of the house on the second floor. The wifi strength at the other end of the house is weak as expected. I can't move the modem/router since multiple devices are directly connected to it. I'm not sure what the best option is for me. From my searches I've seen the options of using a range extender and creating a wifi mesh network but I don't know which option is best for me or if there is another better option. Anyone able to help? Thanks in advance.