If you do not see the "Silicon Labs VCP Driver Install Disk," on your Desktop or in your Finder window, in the left hand column, under devices, then you need to adjust your Finder Preferences to show external disks. First, select the Preferences in Finder.
Then check the External Disks option in the General section to show it on the desktop.
In the Sidebar section you will find the External Disks option in the Devices subsection. Check it in order to show them on the Sidebar in your Finder window.