Reference number: CH001022
What is the 1 by the jumper or how do I locate pin 1?
Question:What is the 1 by the jumper or how do I locate pin 1?
Answer:| Each jumper and dipswitch will have a small numerical 1 that may look like a simple line, but this number identifies which pin is number one. When changing the jumper, your documentation will tell you to move the jumper from one spot to another. By knowing which pin is one, you'll be able to move the jumper block correctly. As can be seen in the picture to the right, this motherboard not only labels pin 1 (not seen on the picture) but also has pins 4 and 6 labeled.
If the documentation you're reading indicates to move the jumper block from pins 2 and 3 to 1 and 2 and pin 1 was on the left-side of the jumper, you would move the jumper block from the right-side to the left-side.
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Additional information:- See our jumper definition for additional information about this term and related links.
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