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How many lines does the usb interface have?

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How many lines does the usb interface have?
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Connecting line Amazon USB cable

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liuchuanyouai

Adopted
The USB interface has 4 lines in total. The middle two are data lines and the two sides are power lines.
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Value recommendation

cmosy

Black ground wire
Red+5V
Yellow+12V
USB is 5V, I hope it can help you
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b27899

The contact is poor due to long-time wear!! Either find a computer repairer to replace your computer or buy a USB docking station!
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longfeiwu

Is the power supply insufficient
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ZOL Q&A > Connecting line > Other classifications > How many lines does the usb interface have?

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