The top cover panel for MB3 has 3 LEDs for showing the communication status between Mach3/4 and ESS board.
You can purchase TopPanel by clicking on an option in MB3 and ESS/MB3 product page.

Related Products
- ESS Ethernet Smoother Stepper.
- MB3 BOB.
- MB3/ESS complete set controller and BOB.
The package INCLUDES
- 4 pcs of 5 mm short standoff, including screws
- 2 pcs of M3 nut with plastic washers
