[CentOS] SD Card Reader not being recognized

I did the following:

[root at localhost codecs]# modprobe usb-storage
[root at localhost codecs]# lsmod | grep ^usb_storage
usb_storage            61193  0
[root at localhost codecs]#

And now when I plug in the card reader, I can hear the hard drive make 
some noises indicating that some kind of response is happening.

However, when I put a card into the card reader, nothing happens. I 
tried putting the card in after connecting the USB cable, and also 
after, just for experiments sake. Still, nothing happens.

Dave