So, it's like a storage cabinet that goes on the top of a desk, usually at the back of the desk.
所以， 它就像一个放在桌子顶部的储物柜，通常在桌子的后面。
英语百科
Stationery cabinet
（重定向自Storage cabinet）
A stationery cabinet (sometimes referred to as a stationery cupboard) is a large steel cabinet with shelves inside, used for storing a variety of items, often stationery or books or other office supplies. It may be used for a wide variety of other storage needs, including machine parts, hardware, or many other things; but offices are the location where they are most often found.