I connected this to my Senville Leto mini split. The USB connector on the mini split has plastic rails left and right of the pins to prevent normal USB connectors from being inserted. I cut the rails away with an Exacto tool so that the SLWF-01 pro could be plugged in easily. Other reviewers mention issues plugging in the module, and I suspect they too were dealing with these rails. The surgery wasn't too difficult, but you will want a sharp blade and your reading glasses. Connecting to my LAN was a easy. Nice instructions. Worked perfectly. My Senville unit is not 100% compatible. The humidity and power sensors in the mini split do not report to HA correctly (they read zero). Maybe there's a fix. Next project is to add a PIR sensor so that I can change the temp. setting when I am actually in the room where the mini split is located.