lshw is a neat little command to list out the details of your computer hardware. The text display is in the form a tree, like in the Device Manager on Windows. Remember to run this program with superuser privileges, else the displayed information will not be complete nor correct!
$ sudo lshw
To get a nice little table of all the devices on your computer:
$ sudo lshw -short
To see the details of a particular class of devices, memory for example:
$ sudo lshw -short -C memory
If you would prefer a GUI to explore the hardware hierarchy, then install the GTK program of lshw and try it:
$ sudo apt install lshw-gtk $ sudo lshw -X
Click the Refresh button to begin the scan of your computer.
Tried with: Lshw B.02.16 and Ubuntu 14.04