. The Back-UPS CS provides professional-grade power protection for office and home office systems. Battery powered and; surge protected power outlets built-in phone/fax/modem line (DSL compatible) protection safe system shutdown software with sophisticated power management features and pro-active audio-visual status indicators ensure office systems and their valuable data are protected from dangerous power surges spikes and blackouts. Easy access to a hot-swappable user-replaceable battery also makes servicing the Back-UPS CS hassle-free. These features along with its classic styling make the Back-UPS CS a perfect choice for protecting your important office and home office systems..