HP ProDesk 400 G5 MT is design to fit the modern workspace now and in the future, the stylishly designed, reliable, and secure hp prodesk 400 mt is a powerful pc with scalable performance that can grow with your business. The full value of your investment comes with expansion that extends the life of your pc. The hp prodesk 400 mt has three bays and three full-height slots, and optional ports4to connect to up to three hp displays.