The BVK Series battery backup UPS power supply is an APC UPS designed to maintain a consistent flow of power with good surge protection to your desktop computer, peripherals, and other home and business electronics. The BVK Series offers AVR to correct voltage fluctuations, USB Charging via USB-C or USB-A ports, LED Brightness controls (via power button), auto-restart when main power recovers after a complete battery discharge, and other controls via the free PowerChute software (for PC's only; Mac OS uses native 'Energy Saver' settings)