USB Type-C
is a new, tiny physical connector. The connector itself can support
various exciting new USB standards like USB 3.1 and USB power delivery
(USB PD).
Alternate Mode
USB Type-C is a new connector standard that is very small. It is about
a third the size of an old USB Type-A plug. This is a single connector
standard that every device should be able to use. USB Type-C ports
can support a variety of different protocols using “alternate modes,”
which allows you to have adapters that can output HDMI, VGA, DisplayPort,
or other types of connections from that single USB port
USB Power Delivery
The USB PD specification is also closely intertwined with USB Type-C.
Currently, smartphones, tablets, and other mobile devices often use
a USB connection to charge. A USB 2.0 connection provides up to 2.5
watts of power — that'll charge your phone, but that's about it. A
laptop might require up to 60 watts, for example. The USB Power Delivery
specification ups this power delivery to 100 watts. It's bi-directional,
so a device can either send or receive power. And this power can be
transferred at the same time the device is transmitting data across
the connection.
This could spell the end of all those
proprietary laptop charging cables, with everything charging via a
standard USB connection. You could charge your laptop from one of
those portable battery packs you charge your smartphones and other
portable devices from today. You could plug your laptop into an external
display connected to a power cable, and that external display would
charge your laptop as you used it as an external display — all via
the one little USB Type-C connection. To use this, the device and
the cable have to support USB Power Delivery. Just having a USB Type-C
connection doesn't necessarily mean they do.
USB Type-C and USB
3.1
USB 3.1 is a new USB standard. USB 3's theoretical
bandwidth is 5 Gbps, while USB 3.1's is 10 Gbps. That's double the
bandwidth, as fast as a first-generation Thunderbolt connector. USB
Type-C isn't the same thing as USB 3.1. USB Type-C is just a connector
shape, and the underlying technology could just be USB 2 or USB 3.0.
In fact, Nokia's N1 Android tablet uses a USB Type-C connector, but
underneath it's all USB 2.0 — not even USB 3.0. However, these technologies
are closely related.
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