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Yes, the Allen-Bradley DF1 driver for KEPServerEX supports the 1784-U2-DHP cable.

This cable expects to convert DF1 to DH+. The cable and its related Rockwell software create a virtual Serial communications port on the PC running KEPServerEX. This communications port will be targeted with the Allen-Bradley DF1 driver. For more information, refer to page 8 of Rockwell's USB-to-Data Highway Plus Cable.

Note: In order to create the virtual communications port, users must install free drivers from Rockwell.