The Smarthome 2448A7T Insteon USB Stick for TouchLinc is specifically designed for use with the TouchLinc running the new TouchLinc app which allows it to control lights, appliances, heating/air conditioning and other devices directly via the INSTEON network. If you use TouchLinc with SmartLinc but would like to upgrade to the TouchLinc app you will need this USB Stick and HouseLinc 2 - INSTEON Desktop Software with USB Interface (Dual-Band).