3rd Gen Dual HDMI Capture Card The USB 3.0 HDMI video capture card can simultaneously capture dual 4K HDMI input video signals, while supportng HDMI 1080P loop out, compaable with Windows7/8/8.1/10/11, Linux and Mac OS, and backward compatble with USB2.0, by USB 3.0/Type-C interface to connect to the computer, through play/capture sofware to achieve preview, recording, live streaming and other functons. Useage settings: OBS software capture setting and Audio setting for capture card on Windows system, please refer strictly to the instructions. Video capture setings for OBS on MAC system "1. Open the OBS capture screen on MAC system, click on ""Sources"" at the button left corner, select the ""+""sign, and choose ""Video Capture Device""" 2. Uncheck the "Use Preset" checkbox "3.Afer turning o ffthe 'Use Preset' opoon, a corresponding parameter table will appear, where you can customize the setngs according to your own needs." Audio Debugging in OBS for MAC System "1. Afer completing the video setup, adjust the audio Setting step by step by clicking on ""Sources"" at the button, then clicking on the ""+""sign and selecting ""Audio Input Capture""." 2. Then select the name of the capture card. 3. Then click on "Edit" on the top left corner of OBS and select "Advanced Audio Properties". "4. Then turn on the ""Audio Monitoring"" option for the ""Audio Input Capture"" and select ""Monitor Only (Mute Output)." SYSTEM SUPPORT Compatible Software: Windows Media Encoder，Adobe Flash Media Live Econder, Reel Producer Plus, QuickTime Player, VLC,OBS, vMix, PotPlayer... Live Stream Software: TikTok, Youtube, Twitch, live, Skype ... Compatible Development Interface: DirectShow (Windows) and other standard UVC interface Caution If you have any use problems, please contact the seller's customer service!!!