Raspberry Pi Micro USB Plug Male Connector to 5.5/2.1 mm DC Female Barrel

There's a Micro USB plug on one end and a 5.5 mm/2.1 mm DC barrel jack with center positive polarity on the other. The premise of this micro usb plug to 5.5/2.1mm. This won't work for charging an iPhone, iPod or iPad or other device which expects some sort of resistance on the D+ and D- connections ,cause of that this does not have any resistors or other connections inside for the data lines. It works for many generic cellphones & Android devices, and most other USB-powered widgets. Details: Cable length from USB end to barrel jack end: 190.5mm / 7.5in Switching power supply : 5V 2A, 5V 4A, 5V 10A Expecting only 5V, so be careful!