The hardware compatibility list is hard to find. I think this is what you need:
http://www.freebsd.org/relnotes/7-ST...l#MISC-NETWORK
A quick search turns up this about half way down:
D-Link DFE-528TX.
The usual advice is to check the chipset actually used. OEMs often change the chipset without changing the part number. If the chipset is different then you MAY be unable to use the card under FreeBSD.