How to add a new network adapter to an existing VM (Oracle VirtualBox)

This same post is available here -> http://imgur.com/a/4FRET

If for what ever reason you cannot access the above, continue reading this post.

This post is only meant to supplement this post.

Step 1: open the settings dialog for your VM

Step 2 : go to the network option in the sidebar - click on the Adapter 2 tab

Step 3: on the adapter 2 tab, notice that the UI is disabled. We have to check the checkbox to specify this adapter

step 4: after you've done so we have to specify a value for "Attached to:" - Select "Host only Adapter" here

Step 5: Select a value for the "Name" select field. Notice it says vboxnet0 - that is the default. That is it. Click OK and you are done. Now power-on your VM and verify if the adapter is detectable by your OS