Hello,
The part number you specified is indeed for an obsolete board which used the non-latching cable; unfortunately this cable is no longer available from NI. You may try calling your internal sales representative by dialing 800-433-3488, as it is possible they may be able to do something more! Though, you may be interested in looking at the following other discussion forum post link where someone else, as you suggested you could probably do, made their own cable; you'll also find the pinouts attached there
🙂http://forums.ni.com/ni/board/message?board.id=140&message.id=4173&requireLogin=False
Best of luck!
Best Regards,
JLS