APC Back-UPS 500 (BK500MC) UPS System for sale online | eBay
American Power Conversion (APC) - BK500 - UPS, 120 VAC, 300 W, 500 VA, (3) 5-15R Out, NEMA 5-15P In, 3.4 min. Backup - Allied Electronics & Automation, part of RS Group
BE500U - APC Back-UPS ES 500VA 300W Refurbished - 1 Year Warranty