These printer LAN-cards are really oldschool, but when they work they work!
Older cards tend to suffer from poor solding from manufacturer - time must show if this is still the case. Anyway: Baking them in the oven (or similar heat-treatment) will fix them several times before permanent failure.
So far I have tested one of two cards purchased. It worked right out of the box and was reset to a point where final setup was a breeze.Configuration through a webbrowser is fairly straight forward.
The used printer (HP LJ2300dtn) is currently running on 15th year and have passed 200,000 pages without repair. It has several years of duty ahead or at least as long as the LAN interface keeps working :)