Hi Ronald,
I've posted two files to our FTP server for you.
This file is the latest one from our website that I converted to a .vss.
If it doesn't work, http://tech.extremenetworks.com/ftp/ftp_new.aspx?file=Visio/visio_stencils_BD 8800.zip. It's a slightly older version that doesn't have the S-10G2Xc.