Does the Anker Powerline II 3-in-1 cable support data transfer? What is the data transfer speed of this cable? 

Yes, it supports data transfer and the data transfer speed of this cable is 480Mbps. 

Can the Anker Powerline II 3-in-1 cable charge three devices at the same time? 

No, it can only charge and connect to one device at a time since you will need to connect the USB-C or the Lightning connector to the Micro USB connector. 

What is the charging speed of the Anker Powerline II 3-in-1 cable?

The maximum charging speed of the Anker Powerline II 3-in-1 cable is 5V/2.4A, which is equivalent to 12W.

If you have any further questions, please contact us for assistance.