Get from Amazon.com : http://www.amazon.com/gp/product/B00005NIM6?tag=hawaiianlegac-20
3Com 3CCFE574BT Megahertz 10/100 LAN PC Card
For Notebook PCs with 16 Bit or 32 Bit CardBus PC Card Slots
Hassle Free Installation and Operation
Simple 10 or 100 Mbps Configuration
Parallel Tasking 10100 Performance