while the idea of the solar staker looks good to me, I think that a single solar array powering multiple devices (including PCs) is much more convenient and efficient.
one PC consumes at least 400 W, so you need something like 2x 250w mono-crystalline solar panel, add the solar charger, the converter, and you easily pay at lest $500

you didn't get the point.
in order to power that single staker you need a solar panel, a charger, a battery, a power adapter...
if you want two stakers it's all doubled.
much better to make a single solar panel array and power everything you can with it.
it's more efficient.