Re: Power your Classmate PC with this cable
 

Good point.
It also may get used in the future for other purposes with devices that lack a fuse.

We have one of these, but for competition we've wired the Inverter directly to an Anderson connector.
The extra connection through the 12v car power socket is a potential point of failure, so keep your eyes on the inverter power status light and the Classmate DS power display to be sure it really is running.