APC BACK-UPS CS 500VA 230V USB/SERIAL (BK500EI) $203 In stock APC BACK-UPS CS 500VA 230V USB/SERIAL (BK500EI) quantity Add to cart SKU: BK500EI Categories: Power & Rack Equipment, Power Equipment Brand: APC Description Description APC BACK-UPS CS 500VA 230V USB/SERIAL Related products 802.11n AP Low Profile Mounting Bracket (AIR-AP-BRACKET-1=) $43 Only 1 left in stock Add to cart APC Smart-UPS Lithium Ion Short Depth (SMTL750RMI2UC) $1,835 Only 2 left in stock Add to cart 5S 550VA/330W Line Interactive UPS LED (5S550AU) $202 In stock Add to cart