Let's look at how to connect a USB to an iPad without a hassle.
USB Camera Adapter, Upgraded 500mA OTG Cable Compatible with iPhone/iPad, Supports Connect Sound Card, U Disk, Card Reader, Hubs, USB Flash Drive, MIDI Keyboard, DAC etc
How to use USB drives with an iPad/iPhone
Use a USB Barcode Scanner With an IPad : 4 Steps - Instructables
30pin OTG to USB 2.0 Female Adapter Cable for Apple Iphone3 iPad Connection Kit
How to Connect USB to iPad (FULL GUIDE)
Connecting a USB to an iPad: Everything You Need to Know
Connecting a USB to an iPad: Everything You Need to Know
Apple Lightning to USB Camera Adapter USB 3.0 OTG Cable Adapter Compatible with iPhone/iPad,USB Female Supports Connect Card Reader,U Disk,Keyboard,Mouse,USB Flash Drive-Plug&Play
How to Navigate Apple's Shift From Lightning to USB-C - The New York Times
How to Connect and Record your Guitar on iPad (USB C)
What is USB-C? Here's everything you need to know
How do I connect an iPad to my network through an Ethernet cable while charging it as the same time?
Is there a way to plug a thumb or USB drive into my iPad to download files?