Which FortiClient Network Adapter Is being used?

Hello,

I'm working on an issue with a particular workstation. This workstation, when it connects using FortiClient to our SSL VPN activates and uses the "FortiNet Virtual Ethernet Adapter".  However, when I attempt to connect to the same VPN with my Workstation, it uses the FortiSSL, PPPoP WAN Adapter.

My question is, what determines which adapter to use? Is there a way I can manually switch between one or the other?

Thanks.