ANT Development Accessory Boards
These boards are available in ANT development kits. Each board has a Molex connector that allows a "M5" module, e.g. ANT11TS33M5IB, ANTAP281M5IB or ANTC782M5IB, to be plugged onto.
USB Interface Board 
When a ANT module plugging on this USB board and then connecting to a computer, the computer turns into an ANT development platform talking to the module through the USB serial port. Also on the board are ten pins with a number of GPIO and analog inputs from the module to link to peripheral devices, such as sensors.
Battery Board
The battery board is used to power the ANT module using a CR2032 coin cell. On the board are a power reset button and a dip switch to set the module operation mode. The Molex connector is to connect to an ANT module directly or first to a interface board or EEPROM board, then to a module.
The battery board also allows the user to interface an application MCU and other peripheral devices to the ANT chip on the module through the 20 pin header.
I/O Board 
The I/O board is included in the AP2DK1 kit. The board contains four buttons and four color LED's that are connected to the GPIO of the ANT chip. The I/O board is supposed to stack on a battery board or an USB interface board to build a simple ANT network node for sensor network demonstrations.
(The picture shows a stack of an ANT11TS33M5IB module, an I/O board and a battery board)
EEPROM Board
The EEPROM board is provided in the C7EK1 kit. Working with an ANT C782M5IB module, the board allows the user to test and configure the Integrated file system and ANT-FS capabilities of the CC2571 chip. The EEPROM board can be mounted directly onto the battery board or onto the USB interface board.