Do you mean Quatech? Haven't heard that name in a looooong time.
Did you see this:
"On Oct 13, 2011, B&B Electronics Manufacturing Company, Inc. proudly announced its acquisition of Quatech, a global leader in Ethernet, Wi-Fi, USB and serial device networking and connectivity solutions for industrial environments."
Mouser has some B+B SmartWorx products in their catalog but nothing with that part number. You might be better off changing it out for a current product with support and documentation. Describe your application and people here will have suggestions.