IBM ThinkPad 310E User Manual page 132

Questions
The PC Card does not work.
Frequently Asked Questions and Problems
Actions
Check the following:
•
Make sure that the PC Card is connected to a PC Card slot.
•
Make sure that PhoenixCard Manager is installed and works
correctly in DOS/Windows 3.11.
•
Press F2 while the ThinkPad logo is being displayed after
power-on to enter the BIOS Utility. Select "System Security"
and toggle the "CardBus Support" parameter.
•
Locate the diagnostics section of the manual that comes with
your PC Card and test the PC Card according to these
instructions.
Chapter 8. Solving Computer Problems
8-5