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USB Power Delivery Rev. 3.1 - includes Standard Power Range (SPR) mode with up to 100 W of power (20 V @ 4 A) and Extended Power Range (EPR) mode with up to 240 W of power (48 V @ 5 A) IEC 62700 "IEC Technical Specification 62700: DC Power supply for notebook computer" Common external power supply for smartphones (EN 62684:2010 / IEC 62684:2011)
To allow for voltage drops, the voltage at the host port, hub port, and device are specified to be at least 4.75 V, 4.4 V, and 4.35 V respectively by USB 2.0 for low-power devices, [a] but must be at least 4.75 V at all locations for high-power [b] devices (however, high-power devices are required to operate as a low-powered device so that they ...
12 V and 24 V powered USB sockets, on an NCR cash register. PoweredUSB, also known as Retail USB, USB PlusPower, USB +Power, and USB Power Plus, [1] is an addition to the Universal Serial Bus standard that allows for higher-power devices to obtain power through their USB host instead of requiring an independent power supply or external AC adapter.
Quick Charge is a proprietary technology that can charge battery-powered devices, primarily mobile phones, at power levels exceeding the 7.5 watts (5 volts at 1.5 amps) supported by the USB BC 1.2 standard, using existing USB cables. The higher voltage available allows more power (watts) to be supplied through wires without excessive heating.
By the mid-2000s, many mobile phone manufacturers (as well as manufacturers of other small battery-powered devices) had already begun designing their products with the ability to use a USB port's 5 V DC power to recharge batteries. The USB Implementers Forum, recognizing this trend, updated the USB standard in 2007 to better accommodate this ...
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 ...
EmPower is a brand name that refers to three different power outlets available on commercial airlines: 15-Volt, 75 Watt DC connector (now called EmPower Classic by the vendor) 5-Volt, 10 Watt USB power-only jacks [1] 110-Volt, AC power jacks (some also have an EmPower USB jack)
USB4 Gen3x2 cable (40 Gbps) with 100 W Power Delivery. Universal Serial Bus 4 (USB4), sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard.