JWright wrote in post #6084592
Hey, can any of you computer gurus help me out here... What's the difference between a PC card and an Express card?
My new laptop has one of those built-in "5-in-1" card readers that accepts everything
except Compact Flash. I have a PC card adapter that will allow a CF card to be inserted in a computer, but according to the documentation that came with my new laptop, it takes an Express card. Apparantly PC cards and Express cards are not interchangeable... I do have a USB CF card reader but I want to leave that with my desktop. I guess I'm just going to have buy another card reader.
Different size, pinout and performance. The PCI Express is a direct tap into the computer's main bus, sorta like CardBus on steroids. And it comes in 2 flavours, with different numbers of pins/contacts. IIRC you can use the smaller-pin version devices in the bigger-pin slot, but that's merely a vague recollection (ExpressCard 34 vs 54)