Guermok
Guermok 4K USB3.0 HDMI Video Capture Card for Streaming, PD100W, 4K@60FPS
Bottom line: The Guermok 4K USB3.0 HDMI Video Capture Card for Streaming: Captures 4K at 60fps in MJPEG mode over a USB 3.0 connection; main trade-off: uncompressed YUY2 drops to 4K@25fps; XRGB tops out at 1080p60.
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Pros & Cons
Pros
- ✓ Captures 4K at 60fps in MJPEG mode over a USB 3.0 connection
- ✓ Accepts 2560x1440 and 1920x1080 input at 120fps for fast-paced games
- ✓ PD 100W USB-C passthrough keeps Quest headsets and tablets charging while you stream
- ✓ No drivers or external power needed on Windows, macOS, Linux and Android
- ✓ 90-degree USB-C plug on a 3.3ft cable keeps VR and tablet setups tidy
Cons
- ✗ Uncompressed YUY2 drops to 4K@25fps; XRGB tops out at 1080p60
- ✗ USB 2.0 ports limit capture to 1080P
- ✗ PS5 needs HDCP turned off or the capture shows a black screen
- ✗ One-way HDMI to USB-C only; no passthrough output to a TV or monitor
Manufacturer description
The Guermok 4K USB 3.0 HDMI video capture card turns a console, camera, or VR headset feed into a clean USB-C video source for OBS Studio, Streamlabs, Zoom, YouTube, and Twitch. In MJPEG mode it captures 4K at 60fps. It also accepts high-refresh input up to 2560x1440 and 1920x1080 at 120fps, so fast games stay smooth before they reach your stream. The 100W USB-C Power Delivery passthrough is the feature to shop for. Connect a PD charger and your tablet or Quest headset keeps charging during a long session. A 90-degree right-angle USB-C plug on a 3.3ft cable keeps the connection flat against…
SpecPicks Verdict
SpecPicks scored Guermok 4K USB3.0 HDMI Video Capture Card for Streaming using a rating × review-volume × price-fit model applied to published specs and reviews across the streaming gear category. Guermok's streaming gear lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for streaming gear of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Does the Guermok capture card work with Nintendo Switch 2?
Yes. Guermok lists Switch and Switch 2 as compatible. Run the console's HDMI output into the card, connect the USB-C end to a USB 3.0 or faster port, and open capture software such as OBS Studio.
Why is my PS5 showing a black screen through the capture card?
The PS5 applies HDCP copy protection to its HDMI output. Turn off HDCP in the PS5 system settings and the video feed should appear in your capture software.
Why does it only capture at 1080P when I want 4K?
USB 2.0 ports only support up to 1080P, so use a USB 3.0 or faster port. If you still get 1080P on a USB 3.0 port, rotate the USB-C connector 180 degrees and reconnect. For 4K at 60fps, select MJPEG format, because YUY2 runs 4K at only 25fps.
Can I connect this capture card directly to a TV or monitor?
No. It is capture-only and sends HDMI video one way into USB-C. You need a computer, tablet, or phone running capture software such as OBS, Streamlabs, or Zoom to view or record the feed.
How does the 100W charging passthrough work?
Plug a USB-C Power Delivery charger into the card's charging port and it passes power through to your tablet, pad, or VR headset. Guermok recommends a 100W charger for the fastest charging and notes that mild heating is normal.
Key Features
- 【4K Ultra HD 60FPS Capture with PD 100W Charging】Supports stunning 4K Ultra HD video capture at 60FPS via USB 3.0, delivering crystal-clear, vibrant, and highly detailed footage. This HDMI Video Capture Card features PD 100W USB-C charging passthrough to keep tablets, pads, and VR devices powered for uninterrupted, long-duration streaming and gameplay. MJPEG:4K/60HZ, YUY2:4K/25HZ, XRGB:1080P/60HZ. Note: For capture use only; requires capture software to function and is not intended for direct screen casting to a monitor or TV
- 【High Refresh Rate Input: 2K@120FPS & 1080P@120FPS】Handles high-frame-rate video input including 2560×1440@120FPS and 1920×1080@120FPS. Supports MJPEG, YUY2, NV12, and XRGB formats, providing smooth, detailed video capture for fast-paced games and dynamic content using a reliable HDMI to USB-C capture card. Please use a USB 3.0 or higher port to connect the device. USB 2.0 ports only support up to 1080P resolution. If the device still outputs 1080P when connected to a USB 3.0 or higher port, please rotate the capture card’s USB-C connector 180° and reconnect
- 【90° Right-Angle Design for VR & Mobile Comfort】The ergonomic 90° right-angle USB-C connector with a 3.3ft cable makes this 4K switch capture card perfect for VR headsets like Quest series and portable tablets, keeping cables out of the way for a more immersive experience
- 【Plug and Play for Streaming and Recording】No drivers or external power required—just plug in and start. Optimized for live streaming, online meetings, and real-time recording via OBS Studio, Streamlabs, Zoom, YouTube, Twitch, and more. Compatible with Windows, macOS, Linux, Android, and PadO
- 【Broad Device Compatibility for Multiple Setups】Works seamlessly with Switch/Switch 2, laptops, PCs, tablets, VR devices, cameras, and more. Suitable for VR gameplay capture, console streaming, and creative projects with smooth integration into any workflow. Charging is only supported via USB-C ports with power delivery capabilities. A 100W charger is needed for optimal charging speed. Mild heating is normal
- 【Note】This capture card supports one-way transmission (HDMI to USB-C). Video input via USB-C to HDMI conversion may cause signal loss due to cable protocol differences. If the PS5 shows a black screen, please disable HDCP. Use a USB 3.0 port whenever possible to ensure bandwidth and resolution. The capture card works through video decoding, which introduces millisecond-level latency, and different video formats (MJPEG, YUY2) support different resolutions. Signal loss may occur if the device disconnects; reconnect or restore default settings. To check if the capture card is functioning properly, connect the USB port to a computer or tablet and open your capture software to confirm detection
Full Specifications
| Brand | Guermok |
|---|---|
| Platform | Android, Meta Quest, Nintendo Switch, PlayStation 4, PlayStation 5, Steam Deck, Windows, Windows 11, Xbox, Xbox One, iOS |
| AV Output | MPEG-4, YUY2 |
| Model Name | GM-77C |
| Tuner Type | ATSC |
| Unit Count | 1 Count |
| Connectivity | USB-C |
| Model Number | GM-77C |
| Compatibility | PS5, Switch, Android, Mac, Linux |
| Built-In Media | Installation Guide, USBA Adapter, Video Capture Card |
| Item Dimensions | 9.13 x 1.02 x 0.24 inches |
| Mfr Part Number | GM-Z77C |
| Number of Items | 1 |
| Antenna Location | Game Streaming, Image Capture, Live Streaming, Video Recording |
| Compatible Devices | Laptop, Quest3/3s, Switch, ipad, iphone |
| Hardware Interface | HDMI, USB 3.0, USB 3.0 Type A, USB 3.0 Type C |
| Video Capture Resolution | 1080p, 4K |
| Recommended Uses For Product | Game Streaming, Image Capture, Live Streaming, Video Recording |
| Other Special Features of the Product | Hdmi Input, Side-Bent HDMI Input, Extended Cable, Flexible Placement |
Ready to buy?
Guermok 4K USB3.0 HDMI Video Capture Card for Streaming, PD100W, 4K@60FPS is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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