
In Stock


Professional 3G-SDI capture in a pocket-sized dongle.
Ask us a quick question about this product — signal compatibility, use case fit, or anything technical. We usually reply the same day.
The Magewell USB Capture SDI Gen 2 captures broadcast-grade SDI video with a dedicated loop-through output for local monitoring. Connect any SD/HD/3G-SDI source to your computer via USB 3.0 with no drivers required.
The FPGA-based onboard processing handles all signal conversion in hardware, leaving your CPU free. The SDI loop-through output keeps downstream SDI equipment operational while capturing.
| SKU | 320700000 |
| Brand | Magewell |
| Category | USB Capture |
| Form Factor | USB 3.0 dongle (Type-A) — bus powered |
| Host Interface | USB 3.0 (SuperSpeed) |
| Video Input | 1× BNC (SD/HD/3G-SDI) |
| Loop-through | None |
| Max Input Signal | 2048×1080 60fps |
| Max Capture Resolution | Up to 2048×2160 — 120fps max (USB bandwidth limited) |
| Signal Features | SD/HD/3G-SDI — Cable equalizer: SD up to 330m, HD 190m, 3G 150m — RGB/YCbCr 4:4:4/4:2:2 — 10/12-bit — Up to 8-ch embedded audio at 48kHz — 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-channel, 24-bit at 48kHz — Output via USB to host |
| 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 3.0 — Max 4.5W |
| Dimensions & Weight | 105mm × 30mm × 14mm — 37g |
| 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-gen-2 ↗
Everything included in the box with the USB Capture SDI Gen 2. 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 Gen 2. 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 Gen 2 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 Gen 2 supports Windows 10/11, macOS 10.9+, Linux, Chrome OS. It uses the UVC standard so it works without installing drivers on most platforms.
The USB Capture SDI Gen 2 captures at up to 1920x1080 @ 60fps. Check the full spec sheet for the complete list of supported resolutions and frame rates.
Yes. Because the USB Capture SDI Gen 2 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 Gen 2 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.