![A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com](https://m.media-amazon.com/images/I/71zbv1ibdgL.jpg)
A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com
![A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com](https://m.media-amazon.com/images/I/71zbv1ibdgL._AC_UF894,1000_QL80_.jpg)
A-Tech 4GB Module for HP ProBook 4540s Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS322399B12034X1) at Amazon.com
![HP ProBook 4540s Intel Core i7-3632QM 2.2GHz 15.6" Windows 7 Professional 64-bit Notebook - Newegg.com HP ProBook 4540s Intel Core i7-3632QM 2.2GHz 15.6" Windows 7 Professional 64-bit Notebook - Newegg.com](https://c1.neweggimages.com/ProductImage/34-257-092-02.jpg)
HP ProBook 4540s Intel Core i7-3632QM 2.2GHz 15.6" Windows 7 Professional 64-bit Notebook - Newegg.com
![parts-quick 8GB DDR3 Memory for HP Compaq ProBook 4540s PC3-12800S 204 pin 1600MHz SODIMM Laptop Compatible RAM parts-quick 8GB DDR3 Memory for HP Compaq ProBook 4540s PC3-12800S 204 pin 1600MHz SODIMM Laptop Compatible RAM](https://m.media-amazon.com/images/I/61HCnBOXrwL.jpg)
parts-quick 8GB DDR3 Memory for HP Compaq ProBook 4540s PC3-12800S 204 pin 1600MHz SODIMM Laptop Compatible RAM
![Restored HP ProBook 4540s Notebook- 320GB HDD, 8GB RAM, i5-3230M CPU, Windows 10 Pro - (Refurbished) - Walmart.com Restored HP ProBook 4540s Notebook- 320GB HDD, 8GB RAM, i5-3230M CPU, Windows 10 Pro - (Refurbished) - Walmart.com](https://i5.walmartimages.com/asr/32b39be6-0dab-4aac-8fcf-4211cc7cd109_1.5fc2535a63710715dc23970bdfcb738c.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Restored HP ProBook 4540s Notebook- 320GB HDD, 8GB RAM, i5-3230M CPU, Windows 10 Pro - (Refurbished) - Walmart.com
![HP ProBook 4540s - Intel Core i3 3110M / 2.4 GHz - Win 8 64-bit - HD Graphics 4000 - 4 GB RAM - 320 GB HDD - DVD SuperMulti - 15.6" HD anti-glare 1366 x 768 (HD) - brushed aluminum - Walmart.com HP ProBook 4540s - Intel Core i3 3110M / 2.4 GHz - Win 8 64-bit - HD Graphics 4000 - 4 GB RAM - 320 GB HDD - DVD SuperMulti - 15.6" HD anti-glare 1366 x 768 (HD) - brushed aluminum - Walmart.com](https://i5.walmartimages.com/asr/c132ec29-8b73-4aa0-b51c-1788e2277026_1.dcab7761f86579597af8ae257f398fdc.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)