Overview | Versatile to meet your ever-changing business needsThe HP Pro SFF 400 Desktop provides users in hybrid work environments with the commercial-grade configuration options and connectivity in a space-saving design. This PC is powered by the latest Intel® processor and protected with always-on security you can trust.Expansion bays and slotsThe HP Pro SFF 400 has an m.2 slot for WLAN and one for storage, one PCIe x16 slot, and one PCIe x1 slot.Connect up to 3 displaysIncrease productivity and tackle a range of workflows with video ports supporting up to three displays.Protected by HP Wolf SecurityHP Wolf Security for Business creates a hardware-enforced, always-on, resilient defense.