HP Probook 640 G1 Review - The Perfect Laptop for students? - YouTube
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HP ProBook 640 G1 Business Laptop, Intel Core i7-4th Generation CPU, 8GB RAM, 500GB HDD, 14 inch Display, Windows 10 Pro, Refurbished Laptop
HP ProBook 640 G1 Intel i5-4200M 2.50GHz 8GB RAM 128GB SSD Windows 10 Pro (Renewed) : Electronics - Amazon.com