CMS 32GB (2x16GB) DDR4 19200 2400MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Dell® Latitude 15 (5580), Latitude 15 (5590), Latitude 15 (E5570) - C108 at Amazon.com
Refurbished: Dell Latitude 5000 Series 5580 Notebook 7th Gen Intel Core i7-7820HQ Quad Core 2.9GHz CPU - 128 GB SSD + 1TB Hard Drive - 8GB RAM - 15.6" FHD LED Display -
Dell Refurbished Latitude 5580 15.6" Laptop Intel Core i5 16GB Memory 512GB Solid State Drive BB5-32865 - Best Buy
32GB 2x 16GB DDR4 Memory RAM for DELL LATITUDE 5580 5590 5591 E5580 E5590 E5591 | eBay
How to replace the Memory in your Dell LATITUDE 5580 | Dell US
Dell Latitude 5580 HD 15.6 Inch Business Laptop Notebook PC (Intel Core i5-6440HQ 8GB Ram, 256GB SSD, Camera, WiFi, HDMI, Type C Port) Win 10 Pro with Numeric Keyboard (Reused) - Walmart.com
Amazon.com: Dell Latitude 5580 15.6-inch Touchscreen Laptop, Intel i5 6300U 2.4Ghz, 32GB DDR4, 512GB NVMe SSD, 1080p FHD, HDMI, USB-C, Webcam, Windows 10 Pro (Renewed) : Electronics