Not sure, but my new laptop has an Intel 4965 a/g/n WiFi chipset and it works incredibly well in Linux (Ubuntu 8.04). If your new PCMCIA is a Broadcom chipset, then you're really out of luck, as Linux support for Broadcom chipsets is downright horrible (they work, but not very well, especially not as well as my Intel one is, it worked out of the box, Broadcom requires third party firmware and hacked drivers and stuff). I don't really know anything about the USB to PCMCIA, as the only computer that uses PCMCIA that I have is my old laptop, which I have a WiFi (Broadcom) card for. My new laptop has internal Intel wireless.