?18 months warranty?Timely Customer Service, 18 month 100% Worry-Free warranty, and friendly customer service.Welcome to contact us if you have any questions or concerns. The 2 Port KVM Switch HDMI Dual Monitor requires every computer support 2 screen or above display functions. If your computer supports this function, and just one HDMI interface, you can use a converter or conversion cable, such as VGA/DVI/DP to HDMI converter or conversion cable. ?Two Switching Methods And Wide Compatibility?1. Toggle selection on front panel; 2. Wired remote switch (one-touch switch). Cross support multiple operation systems & devices: Fully compatible with Windows 10/7/2000/XP/ and Mac; also support HDMI devices like webcam, hard disk player, game console, DVR, NVR etc. ?KVM 3 USB 2.0 Port?Plug and play with no driver needed: include all cables and DC 5V power adapter, with extra USB 2.0 port for sharing printers, scanners, hard dish, webcam, etc. Meet more demands at work, no need to worry about connecting office equipment. ?4K@60Hz HDMI KVM Support Audio Mic?Enjoy high definition picture up to 4K@60Hz, supports separate audio and microphone output. Heavy weight high-end anti interference metal design to ensure sturdiness. 2.0 supports HDCP, HDR, Dolby Vision. EDID simulation maintains correct display information. ?Dual Monitor HDMI KVM Switch 2 Port?A 2-port HDMI KVM switch can control 2 computers using only 1 set of keyboard, mouse and 2 monitors, and supports the display of the main desktop and extended desktop of one computer. and the extended mode can output two different screens, and the mirror mode can output two identical screens.