Is it possible to connect an USB-hub? Yes, on all models with USB (product code contains “Su” e.g. NB800-USu)
Is root access possible? Yes, connect via ssh/telnet user:root password:<as on web interface>
Are Linux LXC containers available? Yes, optional as a software license (NB800-Lic-Vi)
Which resources are available for an LXC container? 50% of the 600Mhz ARM core