Add other known USB adapter

README.md

@@ -1,5 +1,6 @@
 This is a version of the Ralink RT2870 / RT3572STA Wifi driver, appropriate for installing this driver on Ubuntu 12.04, for use with the following USB Wifi adapters:
 
+  1740:9801 Engenius EUB9801
   0df6:0041 Sitecom Europe B.V. WL-329 Wireless Dualband USB adapter 300N
 
 This was put together based on [instructions by chili555](http://ubuntuforums.org/showthread.php?t=1659230), using [2011_0427_RT3572_Linux_STA_v2.5.0.0.DPO.bz2](http://www.ralinkgech.com/en/04_support/license.php?sn=5017).