I assembled it making some mistakes 3 times.  I then  disassembled down to the error, fixed it and continued.  When I got to the step you "gently slide the keyboard into place"  the tray would not stay put.  It wobbled and sagged and the glass keyboard was heavy.  I realized the desk would not work for me.  Once you started clacking keys it would fall out of the assemblage.  Boxed it up and paid the $7 to have UPS come and get it.  My suggestion is don't buy it.