[575] I have a 64 bit Windows 11 laptop. Will this interface board work with this? If not is there an option you can suggest.

Yes, the Mach3 USB controller will work with the latest Windows version and in 64-bit mode. The 32-bit mode is only relevant for using the parallel port driver if you are using a parallel port breakout board. Since this controller is connected via a USB cable, the 64-bit state will work fine. Additional Information: mach3 not showing in device manager