I bought a 2994 High-Performance 10/100 Ethernet Adaptor for my POWERstation 7012-32H off eBay in hopes that it would work, even though it isn’t listed as being compatible with the 32H (the compatible adaptor is the 2992 10BaseT).

It turns out the 2994 10/100 works fine though under AIX 4.3.3. I loaded the drivers for the card and assigned it an IP with smit and I’m installing packages over an NFS export without issue.