Amazon.com: BoxWave Stylus Pen Compatible with Dell Precision 5530 (Stylus Pen by BoxWave) - AccuPoint Active Stylus, Electronic Stylus with Ultra Fine Tip for Dell Precision 5530 - Metallic Silver : Electronics
WildReviewTech – How to upgrade Dell Precision 5530 high performance
Refurbished: DELL Precision 5530 15.6" Touchscreen 2-in-1 Mobile Workstation - Intel Core i5 8th Gen 8305G (upto 3.80GHz) 16GB Memory 512GB PCIe SSD AMD Radeon Pro WX Vega M GL 4GB Windows
Dell Precision 5540 - disassembly and upgrade options - YouTube