Maximum disk size that USB expansion port of EX4100 can support


I am planning to buy My Cloud EX4100. I have My Cloud 4TB, when I tried to plug in My Book 4TB, it doesn’t detect, whereas I can use 1 TB My Passport with My Cloud  without any issues.

Wondering if it will support My Book 4TB hard disk if I plug into expansion port to access it remotely.


Welcome to the Community.

A 4TB WD My Book should be compatible. What file system do you use in the unit? Do you have encryption enabled?