Finally upgraded my Trusty Switch 10 to a new Spin 313-51n. Despite having a dedicated charging port, I have only been provided with a power supply and a Thunderbolt adaptor for charging. This is somewhat annoying as when I am charging while working on the machine, as i lose access to a Thunderbolt port. Is this usual? One of the reasons I chose this model was because it had a separate charging port. Also. given that I can charge via the Thunderbolt port can I use a basic phone charger with a type c cable in an emergency?