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An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
The system power consumption is a sum of the power ratings for all of the components of the computer system that draw on the power supply. Some graphics cards (especially multiple cards) and large groups of hard drives can place very heavy demands on the 12 V lines of the PSU, and for these loads, the PSU's 12 V rating is crucial.
Many owners reported poor wireless connectivity, [2] a fact later acknowledged by Lenovo, and allegedly affecting all U310 and U410 models built prior to 23 July 2012. . Lenovo suggested that users affected by the issue send their Ultrabook to customer support, however no official recall campaign was issued and malfunctioning units in stock were still sold internati
The battery life and design were also praised, with the reviewer stating that there was a "huge improvement in the looks department". LAPTOP Magazine offered a similar opinion, stating that, "Lenovo delivers multimedia and gaming power in a portable design, complete with a one-of-a-kind navigation control". [24]
According to Lenovo, the ThinkPad X-series laptops include low power processors, offer long battery life, and several durability features such as a Roll Cage (Magnesium Frame around the Display), magnesium alloy covers, and a spill-resistant keyboard [7] but currently lacks a replaceable battery and upgradable RAM slots. Battery configuration
A power cord, line cord, or mains cable is an electrical cable that temporarily connects an appliance to the mains electricity supply via a wall socket or extension cord. The terms are generally used for cables using a power plug to connect to a single-phase alternating current power source at the local line voltage (generally 100 to 240 volts ...
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