USB Type C Socket - SMT Inline Breakout Board : ID 4396 : $3.50 : Adafruit Industries, Unique & fun DIY electronics and kits
MACH3 Parallel Port Control 5 axis CNC Breakout Board USB Cable DB25 Parallel cable compatible with TB6600 DM542 DM860H| | - AliExpress
Amazon.com: CNCTOPBAOS 6 Axis NVCM CNC Controller Board,USB Mach3 Motion Control Card 24-32V DC,125KHz USB Interface Stepper Motor Breakout Board for Stepper,Servo Motor,Engraving Machine
SparkFun USB MicroB Plug Breakout - BOB-10031 - SparkFun Electronics
1pc 5 Axis Cnc Breakout Board Interface With Usb Cable For Stepper Motor Driver Mach3 Cnc Board Parallel Port Control - Cnc Controller - AliExpress
BuildYourCNC - Mach3 USB Interface Board
1pcs Driver board CNC USB MACH3 100Khz breakout board 5 axis interface driver motion controller with DB15
Mach3 5 Axis Cnc Interface Adapter Breakout Board Controller Board For Stepper Motor Driver With No Usb Cable And Db25 Cable - Motor Driver - AliExpress
5 Axis Breakout Board for Stepper Motor Driver CNC Router – SainSmart.com
BuildYourCNC - Mach3 USB Interface Board
C25XP - Smooth Stepper Integrated Board
SainSmart 5 Axis Breakout Board for Stepper Motor Driver CNC Mill: Amazon.com: Tools & Home Improvement
4 Axis Usb Cnc Breakout Board Interface Board Controller Usbcnc With Handle Control Usb Port - Motor Controller - AliExpress
How to Slave an Axis in Mach3 with CNC MACH3 USB 4 Axis 100KHz - YouTube