1. An electronic device comprising: a component to provide a primary functionality of the electronic device and a secondary functionality of the electronic device; a physical switch for a user to switch the electronic device between a first mode and a second mode; and, logic to, when the electronic device is connected to a host computing device, expose the primary functionality of the electronic device to the host computing device when the electronic device is in the first mode via the physical switch, and expose the secondary functionality of the electronic device to the host computing device when the electronic device is in the second mode via the physical switch.