What hardware is that ? Is that custom designed for their project, or are they using an existing travel router whose form factor I have never seen before ? I

What hardware is that ? Is that custom designed for their project, or are they using an existing travel router whose form factor I have never seen before ? I am always interested in the smallest possible non-wireless device with two ethernet ports ... all of the dual ethernet tp-link devices have wireless capability, so they are disqualified. Related: this, and every device like it, should be a plug ... even at the expense of compactness...