Avocent SwitchView SC640 - KVM/Audio Switch - 4 Ports (SC640-001) NIAP Common Criteria U.S. designed firmware allows only keyboard and mouse human interface devices (HIDs) to switch to the target computers Automatically clears the keyboard buffer immediately after data is transmitted through the switch, so no data is ever left in the switch Two to four secure channels with 60dB crosstalk isolation to prevent data leaks between adjacent port Desktop Management - improves work efficiency and saves desktop space by eliminating redundant hardware and cables