Memory RAM | 8GB Kit (2x4GB) - HP - HPE - Compaq ProBook 4520s - - 1333MHz, Unbuffered, 1,5V
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Memory RAM | 4GB - HP - HPE - Compaq ProBook 4520s - (OEM-# 575480-001 577606-001 AT913ET AT913AA 599092-002) - 1333MHz, Unbuffered, 1,5V
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![8GB Kit [2x4GB] RAM Memory Upgrade for the Compaq HP Probook 4520s | eBay](https://i.ebayimg.com/images/g/t04AAOSwn4pbm~lX/s-l300.png "8GB Kit [2x4GB] RAM Memory Upgrade for the Compaq HP Probook 4520s | eBay")