MGE UPS Systems all new PulsarEllipse are the UPS of choice to maximize the availability of PCs, workstations and small servers used by home office users and small businesses. Their distinctive compact and lightweight design is the result of MGE's heavy investment in research and development to provide users with the best combination of performance and size. Following in the shadow of the popular Pulsar EL models (over 1 million units sold worldwide), the new Ellipse is for people who care about reliable power protection with advanced features at an affordable price.All Ellipse models can communicate via USB or serial port, depending on the model. UPS-to-PC communications are essential for security of your operating system in the event of an extended power failure. The UPS will signal the O/S when its batteries are nearly depleted to enable an orderly, graceful shutdown and make sure all files are saved. This feature is vital for a typical Web server where the system runs unattended.