This is a Dual Stepper Driver Module for direct replacement of that module in the new G5 series controllers. This module is two PCB cards mounted on the plate . It has two round motor connectors and is setup to install one or two G251 Gecko driver modules (available separately). You can use this as a replacemsnt for an existing module or as an expansion module. If you are ordering as an expansion module be sure to order the optional 10pin ribbon cable to connect it back to the MAT250 card.
NOTE: Photos show G251-2 module with 2 Gecko G241X drivers mounted. You are buying the module LESS the Drivers. Order drivers as Options.