The USB INSTEON PowerLinc Controller is a stand-alone home automation interface for controlling lights, appliances, heating/air conditioning systems and alarm systems. The Windows Media-compatible mControl software is also available separately or as a kit. For Mac users, Indigo 3.0 (sold separately) is also compatible with the PowerLinc USB. On-board clock keeps accurate time, all the time, with integrated 10-year battery backup. No More Fights over the COM Ports Unlike other home automation interfaces, which use the slower RS-232 communication protocol, the PowerLinc Controller transfers data at much higher speeds. Best of all, it plugs into any USB port or expansion hub so there's no need to plug and unplug other peripherals like PDAs, scanners or printers when you need to update the programming. In fact, many new computers, in particular laptops, don't include serial ports any longer, which will make using serial-based interfaces expensive and difficult to use. Don't Block your Outlets The PowerLinc Controller includes Smarthome's innovative pass-through AC outlet on the front of the unit. This outlet that allows you to plug in additional AC devices. While the outlet doesn't have any control features, it really helps against "power strip buildup." Safety Tested and Factory Certification The PowerLinc Controller is safety tested and approved. The assembly lines for SmartLabs Design Products are ISO9001 certified. In order to meet the ISO 9001 standards, the entire factory underwent rigorous inspections of procedures and policies before being thoroughly audited. The certification received was based on its dedication to high quality management systems and strict adherence of quality systems and guidelines.