1.Stable and reliable， convenient and affordable. 2.Strong anti-interference， easy connection and multi-function3.The current version， no external power supply to increase the 5V power supply module， output can be controlled at 5V no matter how much output it is， making the interface board is more stable4.USB power 5V， 500 mA， depends on different computers and different interface， after connecting the stepping motor driver， it may be only about 4.5V5.Using a 40-foot strip microcontroller， easy maintenance and replacement.6.All use HT3.96 socket， easy wiring.7.Three output indicating that there is a relay control external devices directly.8.You can control the drive completely isolated.9.An external manual interfaces， it took over the control box for easy connection.10.Increase power since the resumption of insurance to protect your computer.11. 7 diodes， electrolytic capacitors 10， 104 capacitor 7， 103， 102 a， 4700P / 250V capacitors are both to stabilize.12.Dimension:10.1cm*10.1cm*2.1cm13.USB cable port:USB Type B male and USB Type A male14.USB cable length:about 135cm/4.4ft15.The latest version of the software:You can use the plasma， 3D printer，chinese exported G code?Specifications:1.Can run on Windows XP， Vista or Windows 7Windows 8 (32-bit or 64-bit PC / laptop's USB port (2.x version))2.It can be used in pulse / direction stepper motor and servo motor drives on the market3.The highest performance input-output buffer4.Advanced interpolation algorithm5.You can start， stop， pause， and resume execution of the program on your computerRS274 / NGC G codes (EMC2 compatible with standard)6.Supports advanced G- Code - G40， G41， G42 (the tool radius compensation)7.Advanced G- Code - G43， G49 (tool length compensation)8.Support for advanced G-code - G54， G59.3 (the origin of the coordinate system)9.It supports 4 and 3-axis G-code10.You can import DXF files from the tool path11.You can import toolpath from PLT / HPGL files12.You can import tool path from an image file13.You can use the CNC drilling tool path files14.You can toolpath simulation15.Advanced ATC procedures16.Automatic tool length measurement17.Provide SDK (Software Development Kit)18.You can define the key functions outside19.The maximum step frequency 25 kHz20. 3 digital outputs (floods， fog， spindle)21.The minimum pulse width 1222.All axes can be manually23.All axes can be connected Limit24.You can control external devices I2C protocolPackage include:1 x 4 Axis USBCNC 2.1 substitute MACH3 interface board--MK11 x USB Cable