4 Model featuresThere are four models within the AdderView Secure range. Their varyingfeatures are summarized as follows:Standard 2-port Standard 4-port Enhanced 2-port Enhanced 4-portAVSV1002-XX AVSV1004-XX AVSC1102-XX AVSC1104-XXUni-directional keyboard / mouse data paths ü ü ü üHigh port-to-port crosstalk isolation ü ü ü üHeavy shielding for low emissions ü ü ü üSingle key per port for selection ü ü ü üUSB or PS/2 computer connections ü ü ü üTamper protection ü ü ü üSecure DDC EDID strategy ü ü ü üSmartcard reader support ü üCombined keyboard/smartcard reader support ü üAdvanced tamper protection / reporting ü üAuthentication function ü ü