

iPadOS 13.4 introduced trackpad and mouse support on all iPad models released in the past four to five years. Keyboards with trackpads include Apple's Magic Keyboard and Brydge's Pro+ for the iPad Pro and Logitech's Combo for the 10.2-inch iPad and the 10.5-inch iPad Air.
When using a trackpad, the cursor displays as a circle on the screen, popping up only when you have a finger on the trackpad. The circle then morphs into various other shapes when hovering over app icons, text fields, or other on-screen elements.
Article Link: Microsoft to Add Trackpad Support to Word, Excel, and PowerPoint Apps on iPad