That is called an UltraPort... There are (IIRC) 4 devices that fit it...
- Camera
- CF card reader
- Digital microphone
- Bluetooth module
I'm personally interested in the Bluetooth module... The only things this laptop lacks that I wanted was Bluetooth and USB2.0... I'll probably buy a USB2.0 PCMCIA card for it...
Here is IBM's version:
http://www-132.ibm.com/webapp/wcs/s...fnbr=1&partNumber=33L3245&storeId=1&cntry=840
PS - Both PCMCIA slots on the T23 are 32-bit CardBus...
IBM discontinued all the Ultraport devices. If you want one, you better start looking now.