Allows G-Code or any data transfer between CNC machine control system and your Android device via serial line. Supported file storage types:- Internal memory of Android device- FTP server- Google DriveHW requirements:- Android device with USB OTG support- USB Serial converter with FTDI or PL2303 chipset- Micro USB male or USB C male to USB 2.0 adapter- DB9 F to DB25 M adapter, if your CNC machine is equiped by DB25 serial connector- null modem adapter DB9 F to DB9 F or null modem cable DB9 F to DB9 F, if your CNC machine is equiped DB9 serial connectorSupported control systems are Siemens Sinumerik, Fanuc, Heidenhain, Yaskawa, Mitsubishi, Mazak and others.