But the 20 pin connector on the front of the shark controller is for the Next Wave laser module
NOT for controlling a spindle/router.

(Shark was designed to use a Bosch 1617 and 1618 (2.25 hp), Porter-Cable 890 Series (2.25 hp), and DeWalt 610 (1.5 hp), 616 (1.75 hp), 618 (2.25 hp) routers woodworking router (& NOT A VFD SPINDLE) so you are expected to switch on/off and change the RPM at the router itself I suppose)