Every EZSync cable is built to last for years with high-quality industrial grade materials. EZsync014B is a USB to RS-232 full protocol interface adapter cable. No external power supply needed. Compatible with USB and RS-232 standards. EZsync014B is capable of performing the conversion from single-ended USB signal into UART signal of RS-232. DB25 male connector is used for connection from RS-232 interface. The unique I/O circuit of the internal zero delay auto transceiver contained in the converter controls the data stream direction automatically. The cable is plug-and-play for windows7, 8 and 10. This cable will work for computer USB to a CNC or other serial devices using XON/XOFF software handshaking or hardware handshaking(RTS/CTS or DSR/DTR). Most of the CNC controls are software based handshaking, this cable will work. Please contact the seller if you are not sure this cable works or not for your devices. Some examples: Acramtic Amanda Brother Bosch Boss DeltaDynaPath Fagor Haas Heidenhain Mazak Mori Mitsubishi based controls -all Sinumerik Yasnac Siemens and more.