Semi-OT: Express Card slot on Laptop--digital audio?

["Gary Lehmann" <hqr@cox.net>]

Hello digital music folk,
Yesterday I took possession of an HP Pavilion to replace an ailing Compaq,
and found there was no PCI-CIA slot, only something called an Express Card
slot. The Echo Indigo doesn't fit into it; guess I'll have to use my 
M-Audio
Solo with the Firewire connection for now. But I am wondering if any of you
have an idea of when (or if) hardware for digital audio will be available
for this slot.
TIA,
Gary