You need a Mach4 compatible motion controller.
Several different companies make them.
PMDX.COM - Products for CNC and motion control applications
https://www.warp9td.com/index.php/products
HiCON Integra - Step and Direction 6 Axis Mach3 Mach4 Ethernet Motion Controller, CNC Retrofit, Machine Tools
https://www.poscope.com/product/pokeys57cnc/
CNC MOTION CONTROL SYSTEM (CSMIO products, sets) Archives - CS-Lab
http://www.cncdrive.com/UC300ETH.html