Originally Posted By: andy
Pretty sure. It is a Dell D630, which when I bought it earlier this year was the last in the line of that generation of Dells.

Unless your laptop is ancient then it will support CardBus.

Originally Posted By: andy
The Latitudes have newer slots but I'm fairly sure mine only does PCCard.

The newer slot is ExpressCard.

Originally Posted By: andy
The reason I am not 100% sure is that Dell talks about "Supports 34mm ExpressCard via USB interface through PCMCIA adapter". Which seems to be some sort of adapter that plugs into the PCCard slot and supports some but seemingly not all types of Express cards.

ExpressCard is actually PCI Express x1 + USB 2.0. The adapter that Dell are talking about is basically a form factor adapter with a USB host chipset built into it. Not everything works because it only supports ExpressCards that use the USB part of the interface.

Originally Posted By: andy
What I do know is that it has two miniPCIe slots internally and I'd still like to know whether I can plug an SSD into one of those.

Assuming the card physically fits into the area then it should work.