Marko
From the Jornada 720 start menu==>settings==>control panel==> network==> select NE2000==>try dhcp==> tab to server: fill in router ip.
Eject and re-insert your ethernet card
(connected to router with ethernet cable
).
open Pocket internet explorer ==>http://frogfind.com for text browsing wikipedia, etc or try google.com==> images for thumbnail images.
Did you get things working??
FYI wired ethernet is 1. Secure connection, therefore the best 2. Fastest speed about 2x than wifi cards, IMO 3.drawback is tethered cable but works great with RaspberryPi 3 or 4
(with static ethernet port ip... fast and secure and runs off cell phone charger battery for many hours, aka "hybrid HPC"

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joval via J72
(8
)/Devuan/WPA_wifi/RasPi4/VNC/Firefox hybrid HPC