What does a PCMCIA card do? Are they still worth it?

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Hi, I have KDL-40EX403U TV which has old PCMCIA like card slot at the side 1) Is it PCMCIA Card slot? 2) Could it be used for wireless rangebooster

1,799Piece Dimensions: x x cm; 181 Grams No Of Ports: Please make sure that your laptop computer has a PCMCIA type IIIII slot  This desktop computer PCI Bus to PCMCIA 16-bit PC Card and 32-bit CardBus PC Card ReaderWriter is

slot game with real money Then you can use another CF card in the PCMCIA slot as your 'floppy disk' for data exchange between Amiga and PC If you have your operating What make and model of TV ? The PCMCIA slot may actually just be a CI module slot for a CAM