iPad Pro 12,9” A1652 doesn’t read USB Device

Hello,

Most likely your drive is formatted in a way that is not compatible with iPad.

iPadOS 13 supports the following disk formats with a GUID partition scheme:

• macOS Extended journaled — YES read and write
• FAT32 — YES read and write
• XFAT — YES read and write
• NTFS — NO
• APFS — YES

Which adapter are you using with your iPad?

Yeah,

You need to purchase the genuine Apple Lightning to USB-C adapter from Apple and plug that adapter into power using your iPad charge cable and Apple power/charging block!

https://www.apple.com/shop/product/MK0W2/lightning-to-usb-3-camera-adapter?fnode=37

You need to purchase this exact Apple adapter.

Cheaper ( cheap in price and quality ) third party adapters WILL NOT WORK!!!!

With older Lightning connector iPads, you need this adapter as it has a power connection to power both the iPad and to connect a commonplace USB flash memory drive or portable SSD drive.

Without the additional power to thr iPad, USB flash drives and portable SSD drives will NOT work with older iPads with the Lightning connector.

The Lightning connector alone cannot convey the necessary power requirements needed for normal USB style flash memory drives.

There are lots of YouTube videos that discuss and demonstrate this.

Read my reply to you, again.

This adapter and power are needed for any iPad that uses a Lightning port that can run iPadOS of which there are quite a few iPad models that STILL use the Lightning port/connector.

iPad Air 2 and 3

iPad Mini 4 and 5.

iPad Pro models from 2015-2017

9.7 inch screen 5th, 6th and 7th gen iPads.