pisabell

Thanks a lot for the three the informative answers. Pierre

Hello, I am new to the Universal Devices world and I am planning to buy a used ISY-99i. I checked the manual and it says that I need either a 2412S or 2413S Insteon PLM. But I wonder about the serial port thing. Apparently this is not for connecting the PLM to the ISI because an ethernet connection is provided for that purpose. So this may be because there could be a need to connect the PLM to a computer. However, my computer does not have any serial port. Should I rather get USB PLM? Does this matter from the point of view of connecting the PLM to the ISY-99i? Would a 2414U work OK with the ISY-99i? Thanks in advance, Pierre