Its as simple as ABC.
*Get your USB, check the two holes that reveals the bus/contact. If the conductor there is Golden colour, it means its copper which is original.
Copper has high conductivity than aluminium, copper also has relatively high tensile strength (the greatest stress a substance can bear without tearing apart).
#Now to identify a fake USB
*Check the two holes again, if its silver colour, it means its aluminium,which is fake. Although aluminum has onlyabout 60 percent of the conductivity of copper,but the tensile strength is very low( which tearsapart when subjected to stress) Which makes your USB to to fluctuate.
If you are using this typo of USB, you will be experiencing partial contact. Most universal modems in Nigeria market today are made with this aluminum contact, because aluminium is cheaper than copper, and the manufacturers/ importers make more money from such.
http://www.nairaland.com/2611934/tech-how-identify-fake-usb
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