16GB (2X8GB) Memory RAM for HP/Compaq ProBook 4545s 1333MHZ by CMS A13 | eBay
C5C51EA#ABU - HP ProBook 4545s - 15.6" - A series A4-4300M - Windows 8 Pro 64-bit - 4 GB RAM - 320 GB HDD - Currys Business
HP Probook 4545s AMD A4 | 8GB RAM | 120GB SSD - Green IT
HP ProBook 4545s B5P41UT Notebook PC - AMD Quad-Core A8-4500M 1.9GHz, 4GB DDR3, 500GB HDD, DVDRW, AMD Radeon HD 7640G, 15.6 Display, Windows 7 Professional 64-bit at TigerDirect.com
C5C51EA#ABU - HP ProBook 4545s - 15.6" - A series A4-4300M - Windows 8 Pro 64-bit - 4 GB RAM - 320 GB HDD - Currys Business
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Refurbished: HP Laptop ProBook AMD A6-Series A6-4400M (2.70GHz) 4GB Memory 320GB HDD AMD Radeon HD 7520G 15.6" Windows 10 Pro 64-Bit 4545S - Newegg.com
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Seifelden 8GB (2X4GB) Memory RAM for HP ProBook 4545s Laptop Memory Upgrade - Walmart.com