I'm not convinced that it would be super useful in an Efika, but if you're willing to get experimental, you could try something like the StarTech ST1000BT32
. Seems to be keyed for universal PCI operation, and it uses the Realtek 8110SC chip, which there is a chance would work with the existing MorphOS Realtek 8168 driver.
But let me just make this very clear: There's no guarantee that this card will work
, so trying it is taking a little bit of a chance. Luckily it's not very expensive.
I am not sure if it will be useful in Efika (she is not filful 100 Mbps, in real she have 60 Mbps ). But it will be useful in Pegasos 1 ( with builtin 100 Mbps NIC have real 90 Mbps with 60% CPU utilization ) and old Powermacs.
Anyway thank you very much for the tip, I will try it and know the result.
AmigaOS3: Amiga 1200
AmigaOS4: Micro A1-C, AmigaOne XE, Pegasos II, Sam440ep, Sam440ep-flex, AmigaOneX1000
MorphOS: Efika 5200b, Pegasos I, Pegasos II, Powerbook G4, Mac Mini, iMac G5, Powermac G5 Quad