APC Back-UPS ES Product Support Brochure Contact Sales Rep The Back-UPS ES offers affordable battery backup and surge protection for home computers. With enough power outlets to protect your entire system, built-in phone/fax/modem line (DSL compatible) protection and easy-to-install safe system shutdown software all make this power protection solution the best value for home and home office computers.   All 2 day and overnight orders must be placed no later than 1:00 PM EST. Otherwise, order will be shipped the following business day.