USB 3 speeds are supported only on iPad Pro. I was hoping this statement was not true, because it's 2019 and this a new iPad but looks like it is. I chatted with Apple Support and they could not confirm that the latest iPad Air supports USB 3. It was surprising that they did not have technical spec sheet to confirm this. Long story short if it's not on this page, the iPad doesn't support USB 3:
https://www.apple.com/shop/product/MJYT2AM/A/lightning-to-sd-card-camera-readerhttps://www.apple.com/shop/product/MJYT2AM/A/lightning-to-sd-card-camera-reader
Here is what the page says: "The Lightning to SD Card Camera Reader supports standard photo formats, including JPEG and RAW, along with SD and HD video formats, including H.264 and MPEG-4. It supports data transfer at up to USB 3 speeds on the 12.9-inch and 10.5-inch iPad Pro, and up to USB 2 speeds on the 9.7-inch iPad Pro and all other iPad and iPhone models.*"
The footnote says: "*USB 3 speeds are supported only on iPad Pro."
If your thinking your getting the latest technology from Apple just because it's new and the technology has been around for years, think again. I think for most people USB 3 won't matter much but if your going to transfer photos or videos USB 3 is about 10 times faster than USB 2.
https://www.apple.com/shop/product/MJYT2AM/A/lightning-to-sd-card-camera-readerhttps://www.apple.com/shop/product/MJYT2AM/A/lightning-to-sd-card-camera-reader
Here is what the page says: "The Lightning to SD Card Camera Reader supports standard photo formats, including JPEG and RAW, along with SD and HD video formats, including H.264 and MPEG-4. It supports data transfer at up to USB 3 speeds on the 12.9-inch and 10.5-inch iPad Pro, and up to USB 2 speeds on the 9.7-inch iPad Pro and all other iPad and iPhone models.*"
The footnote says: "*USB 3 speeds are supported only on iPad Pro."
If your thinking your getting the latest technology from Apple just because it's new and the technology has been around for years, think again. I think for most people USB 3 won't matter much but if your going to transfer photos or videos USB 3 is about 10 times faster than USB 2.