Good morning all. I've bought a USB card reader from Amazon, to read a CF card. When I plug the card in to the reader, and the reader into the USB, the red light appeares on the USB reader as if it's reading the card. The card reader has only appeared in the right hand side of the desktop, with the ability for me to open it to transfer the pictures. It has now not worked since, I wonder if it's the card reader what's faulty or is there a certain path I can take on the iMac to manually check the files? if so, how would I do this? Thanks all.