530TX works, I can confirm that. Drivers are here: ftp://ftp.dlink.eu/Products/dfe/dfe-530tx/driver_software/
What I don't like about the 530TX is that it has NDIS2 drivers for wfw3.11 - they work but some other random pci nic Ihave actually has NDIS3 wfw3.11 drivers in the form of .386 file and as such it does not consume any memory outside windows.
530TX needs ~50kb for the "net start" command so that networking works when you load wfw3.11 - not an issue if you have spare UMBs though.
(all that assuming one will only use the TCP/IP protocol under windows and not any DOS Lan clients, no idea about memory usage if you need another protocol)
On an unrelated note I have tested several RTL8139 NICs, drivers are plentiful but their DOS perfomance is abysmal! with a p233mmx with mtcp ftpserver I am getting ~300kb/sec - the same system with the 530TX works at ~2.5mb/sec
edit:
another remark, be sure to use IFSHLP.SYS from the wfw3.11 directory: anything else bluescreens for me 😵