How to identify device node files in /dev?
 

In /dev, we have device files.
Here is an explanation of devie files:
http://www.cyberciti.biz/faq/underst...-device-files/

There are a lot of device files in /dev.
I am aware the files with name like sd?? are
scsi or sata disk partitions.

Q1) I do not know how to identify device files for
"webcam", "mouse", "network or WIFI", and "USB drives.

Is there a list describing files in /dev
or a command line to find appropriate device file?

thank you.