16ch probe-designed to interface electrodes equipped with 16-pin DIP connectors to the X3 X-Headstage. 32ch probe-designed to interface electrodes equipped with one Samtec MOLC 40-pin connectors to the X3 X-Headstage. 64ch probe-designed to interface electrodes equipped with two Samtec MOLC 40-pin connectors to the X3 X-Headstage.