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When a laptop computer is operated while recharging, the integrated circuitry which controls the charging makes use of a power supply unit's remaining electrical current capacity. This allows supplying the device's components with power during usage while maintaining an uncompromised constant charging speed.
On laptops, charging devices from the USB port when it is not being powered from AC drains the laptop battery; most laptops have a facility to stop charging if their own battery charge level gets too low. [90] On Dell, HP and Toshiba laptops, sleep-and-charge USB ports are marked with the standard USB symbol with an added lightning bolt or ...
The C-rate is defined as the charge or discharge current divided by the battery's capacity to store an electrical charge. While rarely stated explicitly, the unit of the C-rate is h −1, equivalent to stating the battery's capacity to store an electrical charge in unit hour times current in the same unit as the charge or discharge current. The ...
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Mobile docking stations usually come mated to an armature, laptop desk or standard rack in order to provide the ability to position the computer in a vehicle in a safe and ergonomic position. As with all docking stations, a mobile docking station will provide the user with a means to quickly and easily dock and undock the computer.
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HP also made an optional docking station, which connected to the port on the bottom of the tablet, which allowed the user to easily connect their tablet to charge, while also offering a VGA output, an Ethernet jack, audio input and output jacks, 4 USB 2.0 ports and a laptop-style CD/DVD drive.