Power Amplifier for Ni DAQ-6015

[Macro]

Hi, I was trying to simulate a pulse generator through LabView using analog output through NI DAQ-6015 pad.  unfortunately, It outputs 50 mWatt instead motor ratings are 4 Watts . Does anyone know power supply or hardware that amplify the signal to drive the motor ? Your help would be highly appreciated, thanks.

[AnalogKid2DigitalMan]

Macro:

Can you supply more info, such as motor voltage and current ratings, type of motor (brushed, brushless, DC or AC), frequency bandwidth, is bidirectional needed, any any other pertinent details. Different motors require different drive methods.