Hi all. So, in my PIC&Ethernet quest, I have aquired a bunch of NE2000
cards based on the RTL8019AS chip. Some of them clearly have no
connection to the +12V pin on the ISA bus - a bonus as then all I need
is +5V. I do have a few cards that the +12V line is connected to though.
However, they go to a component that I can't identify. I tried chipdir
and a google search, and although there were some matches, there was no
ID of what it might be. The closest thing was a product table for
transformers. Question is, why would a transformer need +12? Anyway, the
part number seems to be CFUS0509-C. It's a 24 pin wide DIP, and it's a
big tall block, not an IC.

Any ideas? I know that figuring out what it is won't let me magically
run the card on +5V, but it would make me feel better knowing why I
can't :)

Thanks,

Josh
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