Meets the security requirements of PSD PP v4.0. The ATEN PSD PP v4.0 Secure KVM Switch CS1148DP4C has been specifically designed to meet the stringent security requirements of defense and intelligence organizations. The ATEN PSD PP v4.0 Secure KVM Switch CS1148DP4C complies with the PSD PP v4.0 standard (Protection Profile for Peripheral Sharing Device, Version 4.0) certified by the National Information Assurance Partnership (NIAP). The ATEN PSD PP v4.0 Secure KVM Switch CS1148DP4C provides isolation between computer sources and peripheral devices while allowing the simultaneous use of a keyboard, mouse, monitor, and speakers from connected computers of varying classification levels. Compliance with PSD PP v4.0 ensures that the sharing of peripheral devices offers the highest level of security for user data when switching the focus of the ports. Key protective features include isolation and unidirectional data flow.