Themk,
I'm not sure what you mean by "buzzing," but thanks for offering. I'm not too serious about making my card work, though. It was a long shot that someone would have the granddaughter card as a spare, but I thought I'd ask.
I messaged olePigeon a while back about some SE/30 Ethernet cards, which he still has, I think. I may just pick one up from him instead.