The battle between Thunderbolt and USB 3.0 has only recently begun in earnest, what with mobo's finally emerging to give non-Mac computers access to the 10Gbps interface. While USB 3.0 can't match Thunderbolt in terms of data throughput, it now has the upper hand in power capabilities, as last week the 100W Power Delivery spec was approved for both USB 2.0 and 3.0. That's ten times what Thunderbolt can do, and it means that you can charge up your laptop or power most any peripheral via Universal Serial Bus. Naturally, the new specification relies on beefier cables to deliver maximum juice, but we won't have to go replacing all our old wires -- it includes a means to check attached cables and devices and set the voltage and amperage accordingly. Perfect, that means we won't have to carry around bundle of proprietary power cords when we travel, and we get peace of mind that charging via USB won't have any, ahem, unpleasant side effects.
USB 3.0 Promoter Group Announces Availability of USB Power Delivery Specification
USB Power Delivery extends popular USB battery charging to support higher
HILLSBORO, Ore. – July 18, 2012 – The USB 3.0 Promoter Group, in conjunction with
the USB 2.0 Promoter Group, today announced the completion of the USB Power
Delivery specification, which enables increased power delivery through USB cables and
connectors. The specification expands cable bus power capabilities in USB applications,
supplying higher voltage and current to deliver power up to 100 watts over USB Power
Delivery certified cables. It is capable of delivering higher power to charge notebook PCs
and power external hard-disk drives, devices which previously did not receive adequate
power from traditional 5V bus power.
The USB Power Delivery specification enables a switchable source of power without
changing cable direction. Existing USB cables and connectors are also compatible with
this specification and will coexist with the USB Battery Charging 1.2 specification as well
as existing USB-bus powered applications.
"USB Power Delivery enables a path to greatly reduce electronic waste by eliminating
proprietary, platform-specific chargers," said Brad Saunders, USB 3.0 Promoter Group
Chairman. "We envision a significant move toward universal charging based on this
specification, most notably for charging notebook PCs using standardized USB power
bricks or when connected to USB hubs and desktop displays that integrate USB Power
"The publication of the USB Power Delivery specification is an important step in enabling
a flexible, standardized power management ecosystem," said Peter Harrison, Director,
Standards Collaboration, Nokia.
"We believe USB Power Delivery is the next big step in the USB evolution to provide
high bandwidth data and intelligent power over a simple, single, ubiquitous cable,"
said Robert Hollingsworth, Senior Vice President and General Manager of the USB
Products Group at SMSC. "USB has always combined data and power over a single
cable, and this is widely believed to be a major contributor to the present ubiquity of
USB. USB Power Delivery builds on that success and adds full bi-directional power that
can be renegotiated as system power needs change with the end-user."
The USB 2.0 and 3.0 Promoter Groups developed the USB Power Delivery specification
and have transitioned the specification's management to the USB-IF. The USB Promoter
Groups are now accepting adopters of the USB Power Delivery specification. To
download both the USB Power Delivery specification and adopter agreements, visit
USB Power Delivery Developers Day
USB-IF members who are interested in learning more about the USB Power Delivery
specification are invited to attend USB Power Delivery Developers Day, being held
August 2, 2012 in Washington D.C. The event will provide attendees the opportunity to
gain product planning and design insights beyond just reading the new specification. The
event will include prototype solution demonstrations and interactive Q&A opportunities.
Registration for this event is US$175. To register, complete this form and return it by
email to firstname.lastname@example.org or fax to +1-503-644-6708. The registration deadline is 5 p.m.
Pacific Time on Wednesday, July 25 and the event is only open to USB-IF members.
About the USB 3.0 Promoter Group
The USB 3.0 Promoter Group, comprised of Hewlett-Packard Company, Intel
Corporation, Microsoft Corporation, Renesas Electronics, ST-Ericsson and Texas
Instruments, developed the USB 3.0 specification that was released in November 2008.
In addition to maintaining and enhancing this specification, the USB 3.0 Promoter Group
develops specification addendums to extend or adapt its specifications to support more
platform types or use cases where adopting USB 3.0 technology will be beneficial in
delivering a more ubiquitous, richer user experience.
About the USB-IF
The non-profit USB Implementers Forum, Inc. was formed to provide a support
organization and forum for the advancement and adoption of USB technology. USB-IF
facilitates the development of high-quality, compatible USB devices through its logo and
compliance program recognized around the globe and promotes the benefits of USB and
the quality of products that have passed compliance testing. Further information,
including postings of the most recent product and technology announcements, is
available by visiting the USB-IF website at www.usb.org