i do not know, but i simply googled for "pcmcia usb card reader" and found dozen of them for the cheapest starting at around 50$.
is there a string attached ? (drivers compatibility ?)
i just added P2 to the search string and got this
http://www.virtuavia.eu/shop/pci-to-...er-p29790.htmlhttp://www.psism.com/reader.htm#PCI
http://www.amtron.com/reader/p2card_reader.htm
http://www.shopdigi.com/product.aspx?pf_id=DUEL
http://www.virtuavia.eu/shop/express...er-p29850.html
for less than $100, it seems not so expensive
so seems there is a lot of cheap solution for PCI, expresscard etc...
but yes you are right, many product are offering P2 reading only for PCs, not Macs.
if you got only PCIe on your machine you still can convert a regular PCI card to PCIe with this
http://virtuavia.eu/shop/pci-express...er-p29855.html
while there is a PCIe PCMCIA card, but not sure if it reads P2, while they got something for windows
http://pccard.co.uk/support/pfaq/sramwin.php
http://pccard.co.uk/adapter/e111.php