. APC Back-UPS BX series is a cost-effective power protection solution for home & home office environments. The comprehensive VA range with premium features further enables single UPS capabilities. Key Product Info. Power surge protection Refined power supply Instant power Compact form factor Functional ease of use Network protection Automatic Voltage Regulation (AVR). Product Features Automatic Voltage Regulation (AVR) Automatically steps up low voltage & steps down high voltage to levels that are suitable for your equipment. LED Indicators Provide easy-to-read status of the unit & utility power conditions. Power Chute Personal Edition OS Compatibility This software supports numerous operating systems & processors. USB (Universal Serial Bus) connection Use your PC to access additional power protection & management features for your UPS via a USB (Universal Serial Bus) Port What's in the box?. User manual.