Emtec EKCOWIDU1 (COWIDU1)

Overview
This device is presumably some iteration of the Edimax EW-7318Ug.

Links of Interest

 * Drivers on Emtec's site (Direct Link)
 * Airport-like app for Ralink 2870 on the InsanelyMac forums
 * The USB ID appears to be 148f:2573