I have USB IC-card readers (RC-S320 and RC-S310 made by SONY) and these can work in Beta 6. But RC version is not work !! (5-10 second.... messages shown) I bought Parallels pre-order version already, so I want to use these IC card reader. In Japan many users have these IC-card reader for reading electronic money and traffic cards. Please check these problems ! IC-card reader URL: http://www.sony.co.jp/Products/felica/pcrw/ and I hope PC-Notes taker(http://www.pc-notetaker.com/) is working on Parallels. This device is not worked in Beta 6 and RC version.
Thanks. And Many Japanese Macbook Pro users hopes Using a Japanese Keyboard on Parallels. RC version also mismatched keybord binding.
Maybe you can try reinstall the card reader driver. Some USB card reader can install automatically when plug in the PC.