USB Type-C FAQ: Everything You Need to Know
What is USB Type-C?
What Devices Have USB Type-C Today?
Is USB Type-C the Same as USB 3.1?
What is USB 3.1?
USB 3.1 is a new standard for high-speed data transmission that more than doubles the theoretical bandwidth of the USB 3.0, going from 5 Gbps to 10 Gbps. In real-world testing of a first-generation USB 3.1 controller, Tom's Hardware got read and write speeds well over 700 MBps, nearly double the transfer rate of the same SSDs connected via USB 3.0. USB 3.1 connections are backward compatible with USB 3.0 and USB 2.
What is USB Power Delivery?
The best thing about USB PD is that it could spell the end of the proprietary laptop power brick. Where today every make and model of laptop uses a different kind of power connector, tomorrow all laptops could have USB Type-C connectors with USB PD. You would be able to use the adapter that came with your Dell laptop when you switch over to a notebook from Lenovo, just as you can use your Samsung wire and AC adapter with your LG phone.
Apple has not specifically used the term "USB Power Delivery" in its documentation for the MacBook, but the notebook must be using this specification because it's connected to a 29-watt power adapter. It will be interesting to see whether other notebook vendors start adopting USB PD. While having a univeral connection standard is best for users, it hurts the bottom line for vendors who want to sell replacement power bricks at $50 a pop.