The TESmart HD HDMI 4 Port KVM Switch is a versatile unit that allows you to easily switch between 4 different HDMI sources with a single button. Featuring a 4x1 connection split/duplication, this switch supports 4K resolution at 60Hz for stunning visual quality. Without the need for additional drivers, this universally compatible HDMI switch is powered and easy to set up, making it a convenient and efficient solution for managing multiple devices in a single workstation. Open box may mean cords may not be in plastic packages. May also not have the user manual.