.vc_grid-custom-source {
  .vc_not-for-custom {
    display: none;
  }
}

.wpb-select > .fa {
  display: block;
}

.wpb-select > .fa:before {
  font-size: 15px;
  padding-right: 10px;
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>