This is a Special DDM Class KVM Switch KIT for all HDMI systems and HDMI monitors!!! The Master-IT USB KVM Switch with HDMI series embedded DDM Technology can 100% maintain the compatibility of the shared devices and connect systems. As a result the UD-AP series becomes the most reliable and robust KVM switch in the world. UD-AP HDMI KIT series provides the premium HDMI video resolution up to 4K (3840 x 2160) on HDMI monitor. The UD-12AP+HDMI-KIT, as with all ConnectPRO KVM switches, features all-the-time active DDC/EDID communication, which makes this switch compatible with all versions of Windows, Linux, and Mac OS. ***Some additional features and benefits include: 1. User select-able multi-hotkey (Ctrl, Shift, Scroll Lock, Caps Lock). 2. Built-in IR remote receiver (Remote not included). 3. RS-232 control and firmware upgradable and unlimited UPLINK for future expansion ( for more than 2 monitors sharing). 4. Headphone/Microphone interface for each port. 5. 3 Year Manufacturer's Warranty. *****Special Configuration Kit of UDD-14A+ to following user configuration: Both Monitors Connected to the KVM switch are equipped with HDMI video connector, and both PC systems, laptop, notebook systems or docking stations have two HDMI video outputs.*****