HP launches TouchSmart 520, 420 and 320 all-in-one PCs: pics, specs, prices and release dates - The Verge
HP TouchSmart 520-1155 Desktop PC Product Specifications | HP® Customer Support
HP TouchSmart 520-1047c Refurbished All-In-One PC - Intel Core i5-2400S 2.5GHz, 6GB DDR3, 1.5TB HDD, DVDRW, 23 Display, Windows 7 Home Premium 64-bit at TigerDirect.com
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