HP ProBook 4510S RAM Repair Guide | Installation Video
Review HP ProBook 4510s Notebook - NotebookCheck.net Reviews
4GB Team High Performance Memory RAM Upgrade Single Stick For HP - Compaq ProBook 4420s 4510s (DDR3 Intel PM45/GM45 Chipsets) 4520s Laptop. The Memory Kit comes with Life Time Warranty. at Amazon.com