Thunderbolt 3 to 4-Channel SDI Video Capture Card 40Gbps 1080P60

Product Features：
 
　　Designed for demanding enterprise applications, this capture card utilizes internal hardware to process four simultaneous SDI video feeds at up to 1080P60, ensuring zero host CPU burden. It features dual 40Gb/s Thunderbolt 3 interfaces that support daisy-chain connectivity, alongside a dedicated DP loop-out for continuous local monitoring. The system delivers broadcast-grade output in the YUY2 422 color space, paired with 4-channel embedded audio capture at a 48kHz, 16-bit sampling rate. Backed by PURPLELEC's OEM/ODM manufacturing expertise, the device guarantees robust cross-platform compatibility across Windows, Mac OS, and Linux, complemented by comprehensive SDK support for seamless secondary development and integration into proprietary B2B systems.

　　Blazing-Fast 40Gbps Bandwidth: Equipped with dual Thunderbolt 3 interfaces providing up to 40Gb/s transmission bandwidth. It fully supports daisy-chain configurations, allowing you to seamlessly connect additional high-performance peripherals.

　　Quad-Channel SDI Capture: Supports simultaneous 4-channel HD-SDI and 3G-SDI video signal inputs. It is capable of capturing any resolution up to 1080P60, ensuring broadcast-grade visual fidelity.

　　Zero Host CPU Burden: All complex video processing is entirely handled by the capture card's internal hardware. This ensures maximum system stability without occupying the host computer's CPU resources during critical live productions.

　　Intelligent Video Processing: The hardware automatically judges the input video format and automatically scales it to the designated output size. It also features built-in hardware de-interlacing and outputs in the YUY2 422 color space.

　　Pro-Grade Audio & Monitoring: Features 4-channel SDI embedded audio capture at a 48kHz, 16-bit sampling rate. Additionally, it includes 1 DP (DisplayPort) loop-out for zero-latency local monitoring.

　　Cross-Platform & SDK Ready: Offers broad compatibility across Windows, Mac OS, and Linux systems. It fully supports DirectShow and DirectSound standard interfaces, and we provide comprehensive SDKs for secondary development to facilitate custom B2B software integration.

　　Engineered for professional broadcasting and high-end video production, this premium Thunderbolt 3 Video Capture Card delivers uncompressed, multi-camera streaming with ultimate stability. Featuring dual 40Gbps Thunderbolt 3 ports and four discrete SDI inputs.

FAQ

　　Q1: Is this capture card compatible with both Mac and Windows systems for professional broadcasting?

　　A1: Yes, this hardware provides excellent cross-platform compatibility, supporting Mac OS, Windows (including Windows 7, Server 2008 R2, and Windows 10), and Linux (Kernel 2.6.38 and above). It seamlessly integrates with standard DirectShow and DirectSound API protocols.

　　Q2: Will capturing 4 channels of 1080P60 video simultaneously cause lag or high CPU usage on the host machine?

　　A2: No. One of the core advantages of this capture card is that all video processing is handled by the card itself. It does not occupy the host computer's CPU, ensuring stable, lag-free performance even during high-load multitasking.

　　Q3: Can we integrate this capture card into our proprietary software ecosystem?
　　 A3: Absolutely. We fully support secondary development and provide the necessary SDKs for seamless integration into your proprietary broadcasting, medical imaging, or security software platforms.

　　Q4: How does the Thunderbolt 3 daisy-chain feature benefit my studio setup?

　　A4: The dual Thunderbolt 3 ports feature a massive 40Gb/s bandwidth. While one port connects to your host PC, the second port allows you to daisy-chain additional Thunderbolt devices—such as external RAID storage or high-resolution monitors—simplifying cable management and expanding your workstation's capabilities.