Cyberguys! 121 0030 Video Converter
- 3 HDMI ports total, one input and two outputs
- 4K at 60Hz to both displays, or 1080p at 60Hz
- Mirror only, same image on both screens, no extended mode
- No drivers or software, plug in and both screens light up
- Up to 49ft cable runs with HDMI 2.0 cables
- USB powered, 2.5ft USB cable and adapter included
- Windows and Mac out of the box, plus consoles and cable boxes
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Buy it when two screens need to show the exact same picture from one HDMI source. Skip it if you want two different things on two screens, because it only mirrors.
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ASIN: B0FHW8TGC4Model: 121 0030Category: Video Converters
Overview
A splitter takes one HDMI signal and sends an identical copy to two displays at once. One port accepts the source, two ports feed the screens, and a USB connection supplies power so the signal holds up over the run. Both outputs carry the same video and audio, so the two screens never show different content.
Conference rooms, classrooms and signage setups often need one source shown on two screens, and this box does that without software. The limitation is built into how it works: both displays receive the same image, so it cannot act as a second desktop. Displays also need to accept the same resolution as each other.
Who it's for
Meeting rooms, retail signage and classrooms where a single feed has to reach two screens at once. Buyers who want an extra desktop or two different videos playing side by side should look elsewhere, because the outputs always match.
Pros and cons
- One source mirrored to two screens at once
- Handles 4K at 60Hz on both outputs
- Runs without drivers or software
- USB cable and power adapter included
- No extended or split-screen mode
- Both displays must accept the same resolution
- HDMI cables for the displays not included
- Long runs need HDMI 2.0 cables
Performance notes
The splitter copies the incoming signal to both outputs, so picture and sound stay identical on each screen. Power comes over USB, which holds the signal stable across the rated cable run. Results depend on the source resolution matching what both displays accept, and on the quality of the HDMI cables in the chain.
Specifications
| Brand | Cyberguys! |
|---|---|
| Model | 121 0030 |
| Brand Tech | Cyberguys! |
| Color | Black |
| Connectivity | HDMI |
| Hdmi Ports | 3 |
Frequently asked questions
How long can the HDMI cables be on a Cyberguys! 121 0030 splitter?
Runs up to 49ft work best, and HDMI 2.0 cables are recommended for that distance. Longer or lower-grade cables can weaken the signal before it reaches the displays.
Does this splitter let two screens show different content?
No. It mirrors one source to both outputs, so every screen shows the same image and audio. Extended desktop and split-screen modes are not supported on any operating system.
What do I need to connect before the screens light up?
Plug the HDMI source in first, then the two display outputs, then the USB power. Following that order gives the best results, and no drivers or software are needed on Windows or Mac.
Can I use it with a PS5 or Xbox?
Yes, game consoles, streaming boxes, cable boxes, Blu-ray players and computers all work as sources, and any HDMI TV, monitor or projector can be an output. Both displays still need to accept the same resolution.
What comes in the box with the splitter?
The kit includes the HDMI splitter, a 2.5ft USB power cable and a USB power adapter. HDMI cables for the source and the displays are not included.