CentOS - Dec 2009 - Inquiry:How to recognize the assigned device for attached usb memory?

Dear All
I have attached usb memory to my CentOS 5.2 server and I want to add it to
my /etc/fstab . Can you please let me know how can I recognize it from
my"/dev/?" list ?
Thank you in advance
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.centos.org/pipermail/centos/attachments/20091221/c064a580/attachment.html>