![4GB RAM Memory for HP ProBook 4520s Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com - Walmart.com 4GB RAM Memory for HP ProBook 4520s Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com - Walmart.com](https://i5.walmartimages.com/asr/980035dd-447b-4532-8058-cc7989874382_1.4786561a4503df1c61c09f4a90b33e93.jpeg?odnWidth=612&odnHeight=612&odnBg=ffffff)
4GB RAM Memory for HP ProBook 4520s Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com - Walmart.com
![4GB RAM Memory for HP ProBook 6455b Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com 4GB RAM Memory for HP ProBook 6455b Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com](https://i5.walmartimages.com/asr/980035dd-447b-4532-8058-cc7989874382_1.4786561a4503df1c61c09f4a90b33e93.jpeg)
4GB RAM Memory for HP ProBook 6455b Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-10600 1333MHz Upgrade - Walmart.com
![HP Probook 4520s 15.6" Laptop Windows 10 Home Intel I3 2.53GHz 4GB Ram 320GB Hard Drive DVD WiFi Power Adapter HP Probook 4520s 15.6" Laptop Windows 10 Home Intel I3 2.53GHz 4GB Ram 320GB Hard Drive DVD WiFi Power Adapter](https://cdn11.bigcommerce.com/s-w5trgcbv/images/stencil/1280x1280/products/3838/38861/probook201__82886.1497554519.1280.1280__87697.1554334784.jpg?c=2)