Sue principle it all that I wanted, compact metallic casing, very low power consumption, firwall router, WiFi, VPN tunnel.
In practice it is unacceptably slow! almost 1min to display the list of static DHCP!
He reboot in 174s ...
What has been the abandon is that it would not support a correct flow between a PC and a Linux machine for some unexplained reason.
In short it is not top.