APC Back-UPS Pro 420 - UPS ( external ) - 120 V - 420 VA - UPS battery lead acid

Power problems wreak havoc on today's multitasking networked or stand-alone PCs. An APC Back-UPS Pro instantly switches your computer to emergency battery backup power and allows you to work through brief power outages without data loss or downtime. The APC Back-UPS Pro uses PowerChute plus power management software with WorkSafe to save files and shut down your computer safely in the event of an extended power failure. High-performance surge suppression for AC line and network/dataline protects all paths to your system from electrical noise and damaging power surges - even lightning.