In a new network, the backhaul link will be two PowerBeam M5-400, with the one in the community on a water tank. During the first few weeks, while we wait for more antennas, there are a pair of LiteBeams we want to use, one on the water tank, the other at a house. We do not plan to try putting LibreMesh on these devices because they have new firmware that is difficult to replace. At the water tank, I want to know what of these three options will work for the PowerBeam to connect to the LiteBeam: 1) cable from the LAN port on the PoE of one device to the LAN port on the PoE of the other device 2) switch 3) router (I know this will work)