8 port USB KVM switch which allows the user to control 8 PCs with only 1 USB keyboard 1 monitor and 1 USB mouse. The KVM switch is operating system independent so it will work on Windows Mac OS and Linux (please note the software only works on Windows). The KVM can be controlled by either using the hotkey function on the keyboard the push buttons on the KVM unit itself or depending on operating system the software provided. The 8 port KVM also has an OSD that allows users to see which unit they are switching to with ease. Specification 8 port KVM Switch Cascadable Max resolution: 2048 x 1536 Switch by hot key push button and OSD Works with both PS/2 and USB keyboard and mouse Supports Windows Mac OS and Linux