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USB-C to USB-C cables supporting 5 A current must contain e-marker chips (also marketed as E-Mark chips) programmed to identify the cable and its current capabilities. USB charging ports should be clearly marked with power capability. Full-featured USB-C cables that implement USB 3.1 Gen 2 can provide 10 Gbit/s (full duplex) signalling rate ...
The USB 3.0 Micro-B plug effectively consists of a standard USB 2.0 Micro-B cable plug, with an additional 5 pins plug "stacked" to the side of it. In this way, cables with smaller 5 pin USB 2.0 Micro-B plugs can be plugged into devices with 10 contact USB 3.0 Micro-B receptacles and achieve backward compatibility.
max. USB4 bit rate Exp. max. Cable Length. Other Support Power USB2 USB3 TB3 DP USB2 (aka legacy cable, charging cable) ≤ 4m Yes No No No USB PD: 60W or 100W or 240W Full-Featured passive Gen 1 USB 5 Gbps 20 Gbit/s: ≤ 2m Yes 5 Gbit/s No Yes: Gen 2 USB 20 Gbps (USB 10 Gbps deprecated) 20 Gbit/s ≤ 1m Yes Yes 20 Gbit/s FF. passive USB4
Charging docks supply power, and do not include a host device or data pins, allowing any capable USB device to charge or operate from a standard USB cable. Charging cables provide power connections but not data. In a charge-only cable, the data wires are shorted at the device end; otherwise, the device may reject the charger as unsuitable.
USB ports and cables are used to connect hardware such as printers, scanners, keyboards, mice, flash drives, external hard drives, joysticks, cameras, monitors, and more to computers of all kinds. USB also supports signaling rates from 1.5 Mbit/s (Low speed) to 80 Gbit/s (USB4 2.0) depending on the version of the standard.
Trickle charging. Trickle charging means charging a fully charged battery at a rate equal to its self-discharge rate, thus enabling the battery to remain at its fully charged level; this state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.
Corona discharges represent a significant power loss for electric utilities. Corona discharge from a spoon attached to the high voltage terminal of a Tesla coil. A corona discharge is an electrical discharge caused by the ionization of a fluid such as air surrounding a conductor carrying a high voltage.
Lightning is a proprietary computer bus and power connector, created and designed by Apple Inc. It was introduced on September 12, 2012, in conjunction with the iPhone 5, to replace its predecessor, the 30-pin dock connector. The Lightning connector is used to connect Apple mobile devices like iPhones, iPads, and iPods to host computers ...
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