Amazon.com: HP ProBook 640 G3 14 Inch Laptop PC, Intel Core i5-7200U up to 3.1GHz, 8G DDR4, 256G SSD, VGA, DP, Windows 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Renewed) : Electronics
OFFTEK 16GB Replacement Memory RAM Upgrade for HP-Compaq ProBook 640 G3 (DDR4-19200) Laptop Memory at Amazon.com
Amazon.com: HP ProBook 640 G3 14 Inch Laptop PC, Intel Core i5-7200U up to 3.1GHz, 8G DDR4, 256G SSD, VGA, DP, Windows 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Renewed) : Electronics
HP ProBook 640 G3 (7200U, Full HD) Business Notebook Review - NotebookCheck.net Reviews
HP ProBook 640 G3 review - pricey but reliable and enduring | LaptopMedia.com