The Smart Line SRT1500XLI UPS On-Line 1500VA 1500W with 6 IEC Outlets from APC is a Rack UPS. It features 6 IEC type outlets (like those of computer power supplies) as well as an input and output for an ethernet cable, protecting the devices connected to it, e.g., a router (provided that their power supply is also connected to the UPS or a surge protector). Its operation is (VFI) On-Line/Double Conversion, which continuously supplies power from its battery, protecting against voltage fluctuations and power outages. Its battery can last 14 minutes at half load or 4 minutes at full load (when the devices connected draw half or the maximum current the UPS can provide, respectively). It offers pure sine wave power, which is suitable for sensitive devices (e.g., medical equipment) and is preferred for devices with power supplies that have active PFC protection (e.g., computers).