This is a Portable Program Transfer Device that transfers CNC machine programs from a standard USB flash drive (Thumb Drive, Pen Drive, memory stick?) to or from the CNC control through the RS232 communications port, also referred to as Drip feed DNC or Up-Loading Down-Loading. Extension of file name supports: *.?NC, *.TXT,*.NC, *tap Replace PC running a DNC software NOTICE. This is the version without WIFI connection function. If you are interested in the "WIFI CONNECTION" function, you can access our store https://www.ebay.com/str/DNC-CNC?_trksid=p2047675.l2563 or link below. https://www.ebay.com/itm/DNC-WIFI-DNC-FOR-CNC-MACHINE/303512730883?hash=item46aac4bd03:g:XzsAAOSwPJVdTu9j Data transfer to CNC machine, from USB to RS232, USB to 50 pin parallel port. Can transfer from USB or memory. Memory up to 2G, 4G ... Transfer data to CNC machine with TAPE MODE or MEMORY MODE LCD 2.4 inch, 65536 colors Features: COPY-PASTE, CUT-PASTE, RENAME, NEW FOLDER, DELETE, AUTO CUTTING ... Baudrate max 115200 Shipping: International shipping. We will ship with and track no View more great items