Nicolas
Would it be too much to ask you for an update on this configuration?
Amazon still sells the RAVPower Filehub AC750 (model: RP-WD009) ($85 USD+ shipping).
I think that having more than 20 simultaneous users in a MoodleBox connecting via smart phones, tablets or laptops would be a very useful feature for many poor schools with little funds.
Or a good marketing strategy for convincing a Dean to use Moodle in a poor school in many countries that do not have ethernet access to internet, nor enough PCs in the computer labs.
Once they can use Moodle in a MoodleBox, they might want to upgrade to a larger Moodle site.
A tutorial on how to do this would be very nice!