Hello! I've tried all suggestions here, but no success...my DLC-247 still isn't working with windows 7 (Ultimate 64bits). On the device manager, I've an error on a USB Serial port, identified as "Microchip Technology, Inc. USB Serial port (Com3)", driver version 5.1.2600.9, dated 06-10-2014.
All was working fine, just happened after a windows update. Any help would be appreciated, thanks in advance.