what is the name of cases that go on top of desks?

[FTPATQ]

I typically see them in offices and they are small and rectangular shaped and usually have a monitor on top of them.

 

[daswilhelm]

a "desktop"?

 

[Wolfshadw]

Generally speaking they are called a "Desktop" format as opposed to "Towers" which typically rest below the desk.

-Wolf sends