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HP ProOne 400 Review: HP's all-in-one PC for business users includes touch capability and a relatively low entry price - PC World Business - Notebooks, PCs & Printers - PC World Australia
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HP ProOne 400 G1 19.5-inch Non-Touch All-in-One PC (ENERGY STAR) Software and Driver Downloads | HP® Customer Support
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Refurbished: HP All-in-One PC ProOne 400 G1 Intel Core i3 4330T (3.00GHz) 4GB DDR3 500GB HDD 21.5" Touchscreen Windows 8.1 Pro 64-Bit - Newegg.com
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