The 5 pin to 11 pin micro-USB adapter is used on micro-USB MHL (Mobile High Definition Link) Cables which uses 5 pin such as the one at 5P MHL Cable to convert to 11pin micro-USB used by some smartphones and tablets to connect to an HDTV or Projector. Please google your applicable smartphone or tablet to see if it uses 11pin micro-USB or 5-pin USB. If 11pin the adapter will be needed.
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