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USB-PD Devices can request higher currents and supply voltages from compliant hosts—up to 2 A at 5 V (for a power consumption of up to 10 W), and optionally up to 3 A or 5 A at either 12 V (36 W or 60 W) or 20 V (60 W or 100 W). [61] In all cases, both host-to-device and device-to-host configurations are supported. [62]
This section describes the power distribution model of USB that existed before Power-Delivery (USB-PD). On devices that do not use PD, USB provides up to 4.5 W through Type-A and Type-B connectors, and up to 15 W through USB-C. All pre-PD USB power is provided at 5 V. For a host providing power to devices, USB has a concept of the unit load ...
Windows 8 was the first Microsoft operating system to offer built in support for USB 3.0. [36] In Windows 7 support was not included with the initial release of the operating system. [37] However, drivers that enable support for Windows 7 are available through websites of hardware manufacturers.
The USB 3.x family has had the same technical notation retroactively added in the USB 3.1 and USB 3.2 specification versions. Though this shows common principles and the same generations refer to the same nominal speeds, "Gen A" does not have the same exact meaning in both USB 3.x and USB4 specifications.
The written USB 3.0 specification was released by Intel and its partners in August 2008. The first USB 3.0 controller chips were sampled by NEC in May 2009, [4] and the first products using the USB 3.0 specification arrived in January 2010. [5] USB 3.0 connectors are generally backward compatible, but include new wiring and full-duplex operation.
The xHCI reduces the need for periodic device polling by allowing a USB 3.0 or later device to notify the host controller when it has data available to read, and moves the management of polling USB 2.0 and 1.1 devices that use interrupt transactions from the CPU-driven USB driver to the USB host controller.
Two USB4 ports supporting data, DisplayPort Alt Mode, and USB-C PD 3.1 (back two ports). One USB-C 3.2 port supporting data, DisplayPort Alt Mode, and USB-C PD 3.1 (front left port, with laptop upside down). One USB-C 3.2 port supporting data and USB-C PD 3.1 (front right port, with laptop upside down).
Windows Phone 7 [j] Metro ARMv7: October 29, 2010 Windows Phone 7.5: Mango: September 27, 2011 Windows Phone 7.8: Tango: February 1, 2013 Windows Phone 8: Apollo October 29, 2012 NT 6.2 Windows Phone 8.1: Blue April 14, 2014 NT 6.3 Windows 10 Mobile, version 1511: Threshold 2 November 12, 2015 1511 Windows 10 Mobile, version 1607: Redstone 1 ...