Hammerhead decided to keep the industrial design clean and the options for external power easier. The Karoo 2 is IP67 Water-resistant and does not always necessarily require a rubber plug over the USB-C port.
You will receive two black rubber plugs in the box along with your Karoo 2. These plugs are for the USB C port. Although the Karoo 2 is IP67 Certified with a waterproof charging port, these plugs just add an extra level of protection and help to keep the charging port clean from dirt, mud and moisture.
If you intend to take your Karoo 2 on a muddy or wet ride, we strongly suggest you pop one of these plugs on the charging port.
Reminder - Do Not charge the unit in wet conditions or if the charging port is full of moisture.
See: Charging Karoo 2