CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Latitude E5550 - A7 at Amazon.com
Dell Latitude E5550 Laptop Computer, 2.90 GHz Intel i5 Dual Core Gen 5, 16GB DDR3 RAM, 500GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Professional 64Bit, 15" Widescreen Screen (Used) - Walmart.com
Amazon.com: Dell Latitude E5550 15.6in Laptop, Core i5-5300U 2.3GHz, 8GB Ram, 240GB SSD, Windows 10 Pro 64bit (Renewed) : Electronics
Dell Latitude E5550 15.6" i5 Windows 10 Laptop | 8GB RAM | 256GB SSD | Windows 10 Professional | With Power Adapter
Dell Latitude E5550 RAM, HDD, SSD upgrade guide - Laptopmain.com
Dell Latitude E5550 RAM Memory Replacement Video Tutorial - YouTube