I have a Logisys card reader for my Nikon camera cards. Inexpensive and works fine. Here are plenty of choices: http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=40000069&IsNodeId=1&Description=card%20reader%20usb&name=Card%20Readers&Order=BESTMATCH
The card reader is installed in an adapter in one of the 5 1/2" front bays in my desktop. In service for over a year now.