Black Box Secure NIAP 4.0 Certified KVM MultiViewer - 4-Port, Single-Monitor, DisplayPort, CACThe Black Box Secure NIAP 4. 0 Certified KVM MultiViewer is a high security KVM solution engineered for organizations that demand uncompromised control of multiple secure DisplayPort sources from a single console. This 4 Port, single monitor KVM Multiviewer lets operators monitor and switch between up to four separate DisplayPort equipped computerseach one isolated, yet accessiblefrom the same desk. With CAC card support and NIAP 4. 0 certification,