French tech site Nowherelse.fr posted images of the alleged connector, photographed with a USB connector for size reference.
Reports have indicated that the new iPhone will feature a smaller connector than the current 30-pin port used on the iPhone and iPad. The new connector is said to be a 19-pin port, though rumors have also suggested 9-pin and 8-pin ports.
However, the leaked connector has 16 pins. This could still be consistent with the 8-pin rumour, since the connector is double sided with eight on each side. Apple has not confirmed any pin number, making it difficult to determine the legitimacy of the photo on that basis alone.
Last month, supposed images of the new iPhone were leaked online, revealing the smaller connector port as well as a larger screen.
Apple is expected to announce the new iPhone during a special event on September 12. Rumors suggesting that it will then launch later in September are gaining traction.