CompUSA has an APC Back-UPS ES 500 USB, 500 VA, 300 Watts for $39.99 after $12 rebate with Free Shipping.
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- 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