PCMCIA appeared first and is an approximation of the (old!) ISA BUS. Very slow, cranky too.
PC-CARD or CardBus came out next and is almost like the PCI BUS without all the cranky ISA issues. Speedy too.
You can read more with google.com but about a 9 in 10 chance what you want to do will work. Be sure you are ready for it to not work.
But let's be clear. There has never been and seems there will never be a PCMCIA USB 2.0 card. You want a PC-Card or Cardbus USB 2.0 card.
I own a Thinkpad that is a few years old, running on Windows XP Pro (updated with service packs).
I'm out of memory and was investigating purchasing an external hard drive, but it seems they require a 2.0 USB port and mine is just 1.1. This led me to the idea of getting a PCMCIA card.
Unfortunately, I am pretty good with software issues but know nothing about hardware and all the threads I've read left my brain spinning.
There is a drive on the side of my Thinkpad that's approximately 2 1/4 inches wide, 1/2 inch high and 3 inches deep.
There is software on my system under PCMCIA Adapters: Texas Instruments PCI-1520 CardBus Controller.
So my question is: could this drive be for a PCMCIA Card? If so, if I purchase one (I assume I need a specific model that's compatible with my laptop) with a USB 2.0 port(s), I assume I can just slip it into the slot and then should then be able to connect the external hard drive. Is that correct?
Any help is greatly appreciated.