This item was a return sold as new, but the buyer said the following ;

I found that the y key did not work consistently.  Intermittently, it wouldn't recognize a keypress.  This is a big problem for me as I type a lot as part of my work.

After I received it, I tested it myself, and it's true it seems like the y key times out for a bit after pressing it a lot, and then it reeacts again.  I'm not sure what is causing this, and again, the keyboard is new.   

Selling it as is for parts or repair and keep in mind that no further testing has been done.