Documentation
User Manual: USB-AD43.pdf
Downloads
Drivers can be found at FTDI’s virtual COM port driver page: www.ftdichip.com/Drivers/VCP.htm
For JTAG .dll example/Source code: www.ftdichip.com/Projects/MPSSE/FTCJTAG.htm
For I2C .dll example/Source code click here: www.ftdichip.com/Projects/MPSSE/FTCI2C.htm
For SPI .dll example/Source code: www.ftdichip.com/Projects/MPSSE/FTCSPI.htm
How many Dynamixel servos I can drive with this board?
With the USB-AD43 adapter you will be able to drive 254 servos.
The available ID values for servos are from 0X00 to 0XFD(from Dynamix. AX-12 Datasheet).