Hi,
I suspect that is a version of an XHC controller rebranded. It may work for Mach3 but it wont work for Mach4.
Mach4 compatible controllers are:
Ethernet SmoothStepper by Warp9TD
PMDX-424 by PMDX
UC300 by CNCDrive
57CNC by PoKeys
Hicon Integra by Vital Systems
CSMIO by CSLabs is Mach4 ready but the plugin is buggy and given the high cost of the unit its hard to recommend
despite excellent build quality.
If you have swags of money Galill have a Mach4 plugin.
XHC advertise a Mach4 ready controller, its really buggy....avoid like the plague.
Craig