Increases the output current of the DAC outputs on LabJack devices. Can also be used for switched 3.3V when attached to a 3.3V digital I/O line. LabJack devices cannot output more than about 15mA on their DAC0 and DAC1 analog outputs, so this accessory is very helpful for users who want to increase that capability. One common application is to control the speed of a low voltage DC motor.