Blue LED - This cable lights up Blue when plugged in
The Micro-USB connections are intended to replace the Mini-USB plugs used in new devices including Smartphones and Personal Digital Assistants (PDA).
It is about half the height of the mini-USB connector, but features a similar width. In the Universal Serial Bus Micro-USB Cables and Connectors Specification, details have been laid down for Micro-A plugs, Micro-AB receptacles, and Micro-B plugs and receptacles, along with a Standard-A receptacle to Micro-A plug adapter.
The carrier led group OMTP have recently endorsed micro-USB as the standard connector for data and power on mobile devices. These include various types of battery chargers, allowing Micro-USB to be the single external cable link needed by some devices