Installing the Driver chips and Heatsink HomePage › Forums › HobbyCNC PRO 3 & 4 Axis Board Assembly › Installing the Driver chips and Heatsink This topic has 0 replies, 1 voice, and was last updated 2 years, 9 months ago by BrianV. Viewing 1 post (of 1 total) Author Posts May 28, 2018 at 8:34 pm #5554 BrianVKeymaster Video: Installing the Driver Chips and Heat Sink. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Log in / Register