I have an old Toshiba Satellite 2540CDS laptop and I love it very much.

I wish to buy a Wireless PC Card for it so I can connect to the Internet.

The laptop has Two Stacked PC Card Slots for 5mm PC Cards Type II or one - 10.5mm PC Card Type III.
These slots Supports 32-bit, 3.3V PC CardBus cards and 16-bit, 5.0V PC card standards.

Are there any such wireless PC Card on the market today which could be compatible with my laptop out there?

Best, Pal