It can be used through the AssistiveTouch function.
iOS developer Steve Troughton-Smith discovered native support for USB mice on iPadOS. The feature is available in the system’s accessibility center
“Hi, mouse support in iOS 13! This is an AssistiveTouch feature and it works with a USB mouse. ”
Apple from the scene did not announce mouse support for the iPadOS, but rumors were heard about this feature among journalists. Using the mouse is similar to other input options via Assistive Touch – it simulates pressing a user’s finger inside the system interface.
iPadOS supports USB mice connected to a tablet via Lightning or USB-C. Including it allows you to use Apple’s Magic Trackpad.
As noted in 9to5Mac, it is unclear whether Apple has plans to develop support for the use of the mouse in the iPadOS. While this is an option from the category of special features.
Apple unveiled the iPadOS on June 3 at WWDC 2019. It is a separate version of iOS, the main difference in which is improved multitasking and a redesigned Home screen.