Smart-UPS protects your data by supplying network-grade battery backup when power fails. With Power Chute plus software the uninterruptible power supply (UPS) will safely store data & shut down your network operating system before the battery is fully discharged, whether you're there or not. Smart Slot internal accessory slot means that you can install optional accessories to enhance the performance of your UPS. APC Smart-UPS is the perfect UPS for fileservers, minicomputers, UNIX CPUs, Internet hubs, telecommunications systems & other mission-critical applications.