https://makezine.com/article/home/fun-games/enabling-usb-host-mode-on-the-motor/
Enabling USB Host mode on the Motorola Droid - Make:
Feb 12, 2010 - Ever wish you could plug any USB peripheral into your cell phone? Well, now you can, at least if you have an Android-based Droid phone.
usb host modeon themotorola droidenablingmake
https://www.androidcentral.com/usb-host-mode-enabled-motorola-xoom
USB host mode enabled on the Motorola XOOM | Android Central
Jul 7, 2019 - Sure, the Motorola XOOM has a microSD card slot. But since it's not currently enabled for end user use one has to make due with the 32GB of on board storage...
usb host modeon themotorola xoomenabledandroid