This TRENDnet TK (TK407K) 4-Ports External KVM Switch Box is a reliable and efficient tool for managing multiple computers and servers. With PS/2 connectivity, this switch allows you to easily switch between four different devices, making it perfect for use in an office or data center setting. In addition to its KVM capabilities, this switch also supports audio and USB connectivity, allowing you to easily transfer files and use peripherals with any of the connected devices. The compact and durable design of this switch makes it easy to set up and use, while the intuitive interface ensures that you can quickly and easily switch between devices.