Over 20 million units sold the UPS you can trust APC awardwinning SmartUPS is the most popular UPS in the world for servers, storage and network power protection. Trusted to protect critical data and equipment from power problems by supplying clean and reliable networkgrade power. In addition to legendary reliability and manageability, SmartUPS have extremely high efficiency at low, medium and high load levels making them ideal for todays multicore or virtualized servers that have varying load consumption. Available in a variety of form factors (tower, rack mount, rack/tower convertible) there is a model for every application and budget. Rack mounted SmartUPS are ideal for powering Blade or density optimized servers in a distributed power protection environment as the primary or redundant protection. SmartUPS models have long been considered the benchmark for all network and server UPSs. SmartUPS feature a 16segment LED display, extended range automatic voltage regulation (AVR), and pure sine wave output on battery. Additional manageability options are available through the SmartSlot interface, which is an internal slot for the installation of optional accessory cards. The extended run SmartUPS XL has the capability to add external battery packs to scale runtime from minutes to hours typically needed for converged voice and data network power protection. The entry level SmartUPS SC is an economical choice for small and medium businesses looking to protect small switches, networking devices and pointofsale (POS) equipment.