I once used a crossover cable with an old 3Com card and a Linksys switch - whatever it sent down the wires, the Ethernet port on that switch was fried and has never done Tx or Rx since. I bandaged it with electric tape so I don't connect something else, and also in hope it will someday heal.
The 3Com card was unscathed. In fact, it is probably feeling stronger after that exertion.
The 3Com card was unscathed. In fact, it is probably feeling stronger after that exertion.