Hey @itsriptide,

The main adapter will always need to have its connection alive, as this is what will allow the satellite nodes to awaken and know they are still connected to the network - which is especially important if you happen to need to access a device that may be asleep on the network but can turn on via a wake command. You can think of it similar to Wi-Fi, how while your devices may go to sleep, your router will keep broadcasting its wireless network.

As for the positioning, if you do not have any powerline nodes with wireless functionality, your main concern with placing the powerline nodes sideways would likely be its ability to stay plugged into the outlet. Ideally, they would be kept upright at all times as a precaution.

It is also normal for any networking device to warm up, especially when the device is actively broadcasting and creating the powerline network for your home.

  @itsriptide,

Yes, it should be on all the time and broadcasting / hosting the powerline network for your satellite nodes to connect to.

Just as your Wi-Fi network doesn't disappear when there are no devices, your Powerline network does not disappear when there are no clients(satellites) actively connected - but it will switch to power saving mode when not in use for 5 minutes, which will lower power consumption by 85%

It is normal for networking devices to be warm during use, especially Powerline adapters. If it seems excessively warm to the touch, ensure you are using the device for its intended application and installation. You may unplug the device to see if there are any marks that would indicate that the device may be overheating.