Due to the limitation of the Apple system ( It just allocates only one divice's name ) , the SDI can not be shown on the Apple computer. So if you use it on Apple computer , not recommended ! but on Windows and Linux systems , it works pretty well ! Note: Due to the limit of the USB3.0 Bus speed in chipset ,when you take HDMI and SDI input at the same time,it can only run 1080p30. Interface USB interface:USB3.0，360MB/s Bandwidth(Compatiable USB2.0) Input interface:1xSDI,1xHDMI(Dual Channel Input) Output interface:Only 1xHDMI Loop（this loop output don't support SDI in) Video input:1080P50/60,1080I50/60,720P50/60,576P,576I,480P,480I Audio input:HDMI/SDI embedded Standard HDMI input format:HDMI 1.4a compliance，Support 1080P/60HZ 8-bit,(YUV) SD/HD/3G-SDI，SMPTE-259/274/296/372/424/425/292 compliance Transmission speed:HDMI:165MHZ,SDI:1.485Gb/s，2.97Gb/s Video capture:UVC (USB video class) compliance Audio capture:UAC (USB audio class) compliance Output color space:YUV2 NV12 Recording Mode:Software Compression, Real-Time Mode General： Operation system：Support version x86 & x64 from Windows 7、8.1、10，Windows Server 2008 R2 Linux Compatible software：Windows Media Encoder, ,Adobe Flash Media Live Encoder, Real Producer Plus, VLC, Wire cast, AMCAP etc.… Compatible development interface：DirectShow (Windows), DirectSound (Windows) Update：Firmware can be updated by USB port Dimension：69x90x24mm Box Dimension：100x146x53mm Net/Gross Weight：0.2/0.3kg Working Temperature：0-50 degree Storage temperature：-20-70 degree Included in package：*USB Grabber 1pcs *USB3.0 Cable 1pcs *User Manual 1pcs