Access to an USB disk on the My Cloud with an iPhone (or iPad)

Hi, I have My Cloud 3T with 1 My Book 3T on the USB port.

With the software for Mac, I can just see the USB connected drive, but

how to directly ** access to it , to do changes? (for ex. to do a Time machine backup)**

Second question:

it is possible directly to access to the USB connected device with an iPhone or iPad?

Thanks for yours answers and have a nice WE. Dan

Hi bathdan, to map the USB connected drive, go to Finder, click Go and point to Connect to Server, enter SMB://WDMyCloud or AFP://WDMyCloud and then click on connect as guest, all of the My Cloud shares including the connected My Book will appear. You can access the USB share using the My Cloud app.