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The pinnacle of USB SDI capture — 12G-SDI, true 4K60.
Ask us a quick question about this product — signal compatibility, use case fit, or anything technical. We usually reply the same day.
The USB Capture SDI 4K Pro is the most advanced USB-form-factor SDI capture device in the Magewell range. 12G-SDI input means true 4K60 capture from the latest professional broadcast and cinema cameras — the format that current Sony, Canon, Blackmagic and ARRI cameras output natively.
For broadcast and high-end production teams who need 4K60 SDI capture in a portable form factor — field production, fly-pack rigs, premium engineering benches, top-end DIT carts — this is the dongle to specify. Full backward compatibility with 6G, 3G, HD and SD-SDI means it adapts to whatever camera is in use on a given production.
The enhanced FPGA delivers superior colour handling and frame timing compared to standard USB capture devices. Active SDI loop-through keeps the downstream broadcast chain alive while capture runs. USB bus-powered, driver-free.
| SKU | 321600000 |
| Brand | Magewell |
| Category | USB Capture |
| Form Factor | USB 3.2 Gen 2 dongle (Type-A) — bus powered |
| Host Interface | USB 3.2 Gen 2 (10Gbps) |
| Video Input | 1× BNC (SD/HD/3G/6G/12G-SDI) |
| Loop-through | 1× BNC (loop-through, max 4096×2160 60fps via 12G-SDI) |
| Max Input Signal | 4096×2160 60fps (12G-SDI) |
| Max Capture Resolution | Up to 4096×2160 60fps — Higher throughput via USB 3.2 Gen 2 |
| Signal Features | SD/HD/3G/6G/12G-SDI — Cable equalizer: SD up to 300m, HD 200m, 3G 150m, 6G 100m, 12G 80m — RGB/YCbCr 4:4:4/4:2:2 10/12-bit — Up to 8-ch audio at 48kHz — HDR10/HLG — SMPTE 352 |
| Video Capture Formats | YUY2, UYVY, RGB24, RGB32 — Up to 120fps (limited by USB bandwidth) |
| Video Processing | ~160 Mpixels/s pipeline — Cropping, scaling (up/down), de-interlace, aspect ratio conversion, colour format conversion, frame rate conversion, flip & mirror |
| Audio | SDI embedded up to 8-ch, 24-bit at 48kHz |
| Recommended OS | Windows 10/11/Server 2016/2019/2022/2025 (x86 & x64) — Linux x86/x64/ARM kernel 2.6.35+ — macOS 10.9+ / 10.12+ |
| Supported APIs | Windows: DirectShow, DirectKS, WASAPI — Linux: V4L2, ALSA — macOS: AVCaptureSession, AudioUnit — Magewell Capture SDK (MWCapture) |
| Compatible Software | USB Capture Utility (firmware upgrade, parameter config) — OBS, vMix, Wirecast, XSplit, VLC, any DirectShow/V4L2/UVC software |
| Power | Bus powered via USB 3.2 — Max 4.5W |
| Dimensions & Weight | 111mm × 32mm × 16mm — 49g |
| Working Environment | Operating: 0°C to 55°C — Storage: −20°C to 70°C — Humidity: 10–90% non-condensing |
| UK Stock | In Stock |
| Warranty | 2–3 Years (Magewell manufacturer warranty) |
Full specifications: magewell.com/tech-specs/usb-capture-sdi-4k-pro ↗
Everything included in the box with the USB Capture SDI 4K Pro. Part numbers and accessory images from official Magewell documentation.


If anything is missing from your delivery, contact us within 7 days and we will arrange a replacement.
Official Magewell documentation for the USB Capture SDI 4K Pro. Datasheet is mirrored on our server for direct download; drivers, firmware and software live on Magewell's download centre and open in a new tab.
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Yes. The USB Capture SDI 4K Pro appears as a standard UVC capture device in OBS Studio on Windows, macOS and Linux — no extra plugin or driver needed. Select it as a Video Capture Device source.
The USB Capture SDI 4K Pro supports Windows, macOS and Linux. It uses the UVC standard so it works without installing drivers on most platforms.
The USB Capture SDI 4K Pro captures at up to 4K @ 60fps. Check the full spec sheet for the complete list of supported resolutions and frame rates.
Yes. Because the USB Capture SDI 4K Pro presents itself as a standard webcam/capture device via UVC, it is recognised by Microsoft Teams, Zoom, Google Meet and most other video conferencing platforms without any additional software.
Yes — it draws power from the USB port itself (USB bus-powered), so no external power supply is required.
The USB Capture SDI 4K Pro connects via USB 3.0. It is backward compatible with USB 2.0 ports but capture performance will be limited at lower USB speeds — a USB 3.0 port is recommended for full-resolution capture.