LiZzIe - usenet poster
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In addition to ports, some laptops have expansion slots for PCMIA standard adapter cards (Type I and Type II) or "PC" cards. These cards can be used to upgrade your laptop by adding memory, a modem, a network connection or a peripheral device (such as a CD-ROM drive). One or two PC slots will help extend the life of your laptop by allowing you to upgrade rather than replace your laptop in the future.