If for some reason you do not need a screen, or you want to connect an external monitor and keyboard, then mainframes are what you need. Possessing the same computing stuff as the automated All-in-One Data Acquisition System, these devices have much more space allocated for expansion cards. The high-end multichannel data acquisition system in the mainframe form factor is available in various sizes of cases with the ability to connect from 32 to 144 channels.