. The APC Back-UPS 650VA 230V Tower is a reliable & affordable uninterruptible power supply (UPS) that provides backup power & surge protection for your electronics. It is ideal to be used with computers networking equipment home entertainment systems & other electronic devices. The Back-UPS 650VA features four battery-backed outlets that provide up to 650VA of power & 375W of continuous power. It also features a surge protector that safeguards your equipment from damaging voltage spikes & surges. Backup power The Back-UPS 650VA provides up to 650VA of backup power & 375W of continuous power which is enough to power most computers networking equipment & home entertainment systems for several minutes. This gives you enough time to save your work & shut down your equipment safely in the event of a power outage. Surge protection Features a surge protector that safeguards your equipment from damaging voltage spikes & surges. This is especially important for sensitive electronic devices such as computers & networking equipment. In the event of a power outage the Back-UPS 650VA will automatically switch to battery power providing you with enough time to save your work & shut down your equipment safely. It also features Power Chute software which provides you with real-time power status information & means that you can safely shut down your computer in the event of an extended power outage. Automatic Voltage Regulation (AVR) The Back-UPS 650VA features AVR which helps to regulate the voltage of incoming power to a safe level for connected equipment. This is important for protecting your equipment from damage caused by voltage fluctuations. User-replaceable Battery The battery in the Back-UPS 650VA is user-replaceable so you can easily swap it out for a new battery when it reaches the end of its life. This extends the life of your UPS & saves you money on replacement costs. Easy to Use and; Compact Tower design Has a compact tower design so it won't take up a lot of space on your desk or floor. This makes it absolutely ideal to be used in homes & offices with limited space. Easy to install & use. It simply plugs into a standard wall outlet & provides protection for your electronics without any additional wiring or configuration..