APC Smart-UPS XL protects your data by supplying reliable, network-grade power with scalable run-time in tower and rack mount form factors. With optional, matching battery packs, run-time can be easily extended and optimized for the application. APC understands long run-time requirements so; Smart-UPS XL's can be configured with up to 10 additional battery packs - for run-times exceeding 24 hours, if necessary. The convergence of voice and data networks is placing higher demands on availability expectations - and the Smart-UPS XL delivers. Voice over Internet Protocol (VoIP), e-commerce, WiFi ("hotspots", WLAN/ WWAN, and mixed wireless), and data enabled PBX's are a few of the applications driving the need for Smart-UPS XL. APC Smart-UPS XL is also the perfect UPS for fileservers (Intel or UNIX based), minicomputers, Network switches and hubs, ATM's, telecommunications systems and other mission-critical applications requiring longer runtime. With included PowerChute management software for servers and workstations, IT administrators can provide safe system shutdown and advanced UPS management. Connectivity is through a serial or USB port (USB not standard on all models). Additional manageability is available through the SmartSlot, an internal accessory slot that allows you to install optional accessories to enhance the performance of your UPS. Network connection with Web browser management and/or environmental monitoring, serial port expansion, and out-of-band management options are available. With pure sine-wave output ensuring compatibility with all connected devices, Intelligent Battery Management ensuring a highly available UPS and an advanced 16 segment bar graph display ensuring information and management, the Smart-UPS XL is a UPS you can count on.