HP ProBook 4530s 15.6 Inch Business Laptop, Intel Core i3-2330M 2.2GHz, 4G DDR3, 320G, WiFi, VGA, HDMI, Windows 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Renewed) : Electronics - Amazon.com
A-Tech 4GB Module for HP ProBook 4530s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322397B12034X1) at Amazon.com
Seifelden 8GB (2X4GB) Memory RAM for HP ProBook 4530s Laptop Memory Upgrade - Walmart.com
HP ProBook 4530s - iFixit
HP ProBook 4530s 15.6 Inch Business Laptop, Intel Core i3-2330M 2.2GHz, 4G DDR3, 320G, WiFi, VGA, HDMI, Windows 10 Pro 64 Bit Multi-Language Support English/French/Spanish(Renewed) : Electronics - Amazon.com
HP Probook 4530s RAM upgrade - HP Support Community - 6903001
Review HP ProBook 4530s-B0Y11EA Notebook - NotebookCheck.net Reviews
HP ProBook 4530S 15.6" Laptop i3-2350M - Windows 10 - Grade