parts-quick 16GB Memory for Lenovo ThinkPad T480 DDR4 2400MHz SoDIMM RAM at Amazon.com
Lenovo ThinkPad T480s - add a second stick of DDR4-2400MHz RAM - YouTube
Lenovo THINKPAD T480s 16GB DDR4 RAM Memory | eBay
Amazon.com: Genuine Parts for Lenovo ThinkPad T480s (Type 20L7, 20L8) 14.0 inch i5-8350U(1.7Ghz) and 8GB-RAM UMA Graphics System Motherboard 02HL838 01LV622 : Electronics