DC Power Jack

There are two ways to power your Arduino: you can use the USB connector to connect to a computer or portable power pack or you can plug into a wall adapter. USB can be used to power and program. DC can only be used for power - but it's great for when you want to connect your Arduino and leave it plugged in for a long term project.

This is the DC Power Jack:

The technical specifications for the jack is:

2.1mm inner diameter, 5.5mm outer diameter with Positive Tip

That's just the mechanical size of the plug in case you're looking to match it up. It's an extremely common power plug size, so it isn't too hard to find a matching power plug. Sometimes they're just referred to as "2.1mm DC Plug"You can use a wall adapter like this:

You can use any adapter that is Center Positive and 7 to 12VDC output - we recommend 9V DC if possible. Check the following photo for the symbol that indicates Center Positive and for the 9V output text. The Arduino is fairly rugged and can survive plugging in the wrong adapter as long as the voltage isn't higher than 20V but it's 'stressful' to the 'duino and you should aim for 9V!

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DC jack is one of the important components of computer. It could be used as the replacement if your DC jack is broken. Made of high-quality material, it can ensure long-term life in use, which will satisfy your demand. You can replace the broken one with this new DC jack without damaging the motherboard. With its small size and light weight, it is easy to install and release. It is up to the standard that you could use it without any worries.

Features:
1. New and never used
2. High-quality and durable in use
3. Advanced technique and fine workmanship make them stronger, reducing the chances of future breakage
4. Strong applicability and compatibility
5. Easy to install and release
SYMPTOMS OF A BROKEN LAPTOP DC POWER JACK
A. The Laptop Only Operates When You Hold The DC Power Plug In A Certain Direction (Jack Is Broken Or Loose)
B. The Laptop Only Runs On Battery Power (No Power Is Getting Through The DC Jack)
C. The Laptop Gets No Power At All
D. The Laptop Will Not Charge The Battery
E. The Laptop Switches From AC Power To Battery Power Intermittently Due To A Loose Or Broken Power Jack
F. The Laptop Suddenly Shuts Off OR The DC Jack May Feel Loose
G. Sparks Come Out On The Reverse Of The Laptop When You Insert The Power Plug Into The DC Jack
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Symptoms of a broken Laptop DC power jack

The laptop only operates when you hold the DC power plug in a certain direction (DC jack is broken or loose).

The laptop only runs on battery power (no power is getting through the DC jack).

The laptop gets no power at all.

The laptop will not charge the battery.

The laptop switches from AC power to battery power intermittently due to a loose or broken power jack.

The laptop suddenly shuts off.

The DC jack may feel loose.

Sparks come out of the back of the laptop when you insert the power plug into the DC jack

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Motherboard aka System Board or Mainboard

Motherboards are boards that are connected to all internal laptop components. Because all the components of a computer are connected to the motherboard, they can communicate with each other through the motherboard. In a laptop computer, the motherboards are different from desktop motherboards because they do not have to comply with specific form factors such as desktop motherboards (AT, ATX), they are designed and charged differently for each laptop. Also, the laptop motherboard is not usable because many factors like video and audio are integrated on the motherboard and they do not have extension slots available.

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