Not all of them, there was an era when they didn't, much to the chagrin of many pro audio people, though that's all I know about it (no dates)

I use a StarTech expresscard with a TI chipset that works fine for me, though for live I'd rather use PCMCIA cuz the expresscard standard has the most fucking RETARDED design flaw where the slightest tug will dislodge it (it's universal to all expresscards, drives me insane

), and the lower bandwidth of a TI-based PCMCIA FW card won't be an issue with only a few tracks (like anything under 8 is cool I'd say)
So in other words, I wouldn't sweat it dude, just buy any old laptop with a PCMCIA slot and something like
this!