The ASUS ExpertCenter PN42-BBN200MV, also known as the VIVO Mini PN42-BBN200MV, is a barebone model. This means that it only contains the housing and the basic components such as the processor (in this case the Intel® Processor N200), but is not pre-equipped with RAM or storage.

So you need to add separate components such as RAM and an SSD to make the device fully functional.