For those who aren't aware what PCMCIA stands for: People Can't Memorize Computer Industry Acronyms
It was fun being able to expand your computer's IO capabilities by adding on a network card, modem, USB, FireWire, etc. with these modules. It's similar to Framework's little USB-C-based modules, though those modules are just too small for a lot of circuits without a very creative design.
PCMCIA and PC Card = ISA
CardBus = PCI and ISA - slot was backwards compatible so you could use a PC Card in a CardBus slot
ExpressCard = PCIe
>So we know these were originally called PCMCIA cards, then later PC Cards, right? Well, I think I might have found the first mention of PCMCIA in PC Magazine. It is in a Dec 1991 column by Dvorak where he "introduces" the "PCMCIA PC-Card". Here's a quote, "In fact, the card should be referred to as the PCMCIA PC-Card, or the PC-Card for short. PCMCIA is the Personal Computer Computer Memory Card International Association (Sunnyvale, Calif., 408-720-0107), and it's the governing body that has standardized the specifications for this card worldwide. JEIDA works with the PCMCIA; it's specifications are identical."
>So at least according this Dvorak column, these were ALWAYS properly called "PC-Cards" (he used a hyphen), but early on people definitely were calling them PCMCIA cards and I remember the shift to everyone later (much later than this 1991 column) calling them PC Cards.
It definitely seems to reinforce the joke backronym of "People Can't Memorize Computer Industry Acronyms" for the whole thing given how badly it was all refered to. It's a lot like the whole Clippit/Clippy situation with the Microsoft Office assistants. Originally it was only named Clippit but Clippy got coined by everyone else and even Microsoft ended up giving in and using it in marketing materials not too long after the fact.
(Or possibly s/computer/complicated/, that's how I remembered it at least.)