by Tina Gasperson

Your laptop probably has a slot for either a PCMCIA or an ExpressCard. PCMCIA is the older standard, used many times for modems or wireless broadband cards. Lately, however, laptop manufacturers have been building machines with Express slots instead of PCMCIA. That might throw you for a loop if you’re not careful, since the slots for PCMCIA and Express are similar. You’ll quickly find that they are not interchangeable, however. If you buy a new laptop with an Express slot and your broadband wireless card is PCMCIA, it will not work in your new system.
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