Adafruit 16ch servo board I2C address

As I am a novice on the Adafruit 16ch servo board and to check if I have connected the board correctly Iran the I2Cscanner.
There I noticed that the board ha 2 I2C adresses e.g. 0X40 (the standard) and 0X70. My question where is this address used for.


The PCA9685 on that board has two special addresses.
One is the address to call all boards when the board is stacked and used, and the address will be 0x70.
The other is the address that software resets the board, which will be 0x03.
The software reset requires a specific step, so it seems that there is no response.

Normally, using device address 0x40 is fine.

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