1. Use an ethernet cable to connect the LAN port of your main Gigaspire to the single Ethernet port of the u4m mesh.
2.  Plugin the power adapter into the u4m mesh.
3. Wait 15 minutes for u4m mesh to update and sync.

After step 3, there should be a solid green light indicating that the unit has successfully synced. If the light is not solid green after 15 minutes, please call tech support at 800.492.5989.