# Openterface Mini-KVM Toolkit (TechxArtisan)

> Use a laptop as a local console for a headless computer.

- **Category:** Instruments
- **Availability:** Listed by maker
- **Price:** US$129 (at crowdsupply.com), checked 2026-09-16
- **Good for:** Configure or recover a nearby headless computer.
- **You'll need:** A host with the Openterface app and a powered target with HDMI output and USB control.
- **Trade-off:** 1080p30 capture; older BIOS USB-hub compatibility varies.
- **Page:** https://gadgets.sh/devices/openterface-mini-kvm-toolkit/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| TechxArtisan | Orderable | https://openterface.com/minikvm/?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=openterface-mini-kvm-toolkit&utm_content=api |
| Crowd Supply | Orderable | https://www.crowdsupply.com/techxartisan/openterface-mini-kvm?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=openterface-mini-kvm-toolkit&utm_content=api |
| Amazon | Orderable | https://www.amazon.com/dp/B0H5PHJG6C?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=openterface-mini-kvm-toolkit&utm_content=api |

## Blueprint

**Open hardware.** TechxArtisan publishes full v1.9 PCB Gerbers, schematic PDF, BOM and a STEP model under CERN-OHL-S-2.0 in a dedicated hardware repo; the Openterface_QT host app is separate open-source software.

### Design files

- schematic: [Schematic v1.9 (PDF)](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/blob/main/hardware/v1_9/SCH_Schematic1_9_2024-09-30.pdf) (PDF)
- gerbers: [Gerbers v1.9 (folder)](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/tree/main/hardware/v1_9/Gerber_PCB1_11_2024-09-30) (Gerber)
- bom: [BOM v1.9 (XLSX)](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/blob/main/hardware/v1_9/BOM_KVM_Over_USB_1080p_v1_9_final_PCB1_11_2024-09-30.xlsx) (XLSX)
- 3d-model: [PCB 3D model v1.9 (STEP)](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/blob/main/hardware/v1_9/3D_PCB1_9_2024-09-30.step) (STEP)
- enclosure: [Case models (STL, multiple)](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/tree/main/models) (STL)

### Source repositories

- [TechxArtisanStudio/Openterface_Mini-KVM_Hardware](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware) — hardware, CERN-OHL-S-2.0, ★298
- [TechxArtisanStudio/Openterface_QT](https://github.com/TechxArtisanStudio/Openterface_QT) — sdk, AGPL-3.0, ★164

### Key parts

| Part | Role | Datasheet |
|---|---|---|
| MacroSilicon MS2109 | HDMI-to-USB3 capture chip | https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/blob/main/part/ms2109/MS2109-intro.pdf |
| WCH CH9329 | USB-to-serial HID keyboard/mouse bridge | https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/blob/main/part/ch9329/ch9329_datasheet_en.pdf |

_Notes:_ All links curl-verified 200. v1.9/PCB1.11 is the newer of two revisions in the repo (v1.6 files also present).

### Raw source files

Direct links an agent or KiCad can open (the viewer on the page reads the same files).

- 3D model (STEP, 28.6 MB): [PCB 3D model v1.9 (STEP)](https://raw.githubusercontent.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/main/hardware/v1_9/3D_PCB1_9_2024-09-30.step)
- 3D model (STL, 0.4 MB): [hdmi side(Nylon)](https://raw.githubusercontent.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/main/models/hdmi-side(Nylon).stl)
- 3D model (STL, 0.2 MB): [hdmi side](https://raw.githubusercontent.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/main/models/hdmi-side.stl)
- 3D model (STL, 0.1 MB): [type c side](https://raw.githubusercontent.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/main/models/type-c-side.stl)
- 3D model (STL, 0.1 MB): [type c side open](https://raw.githubusercontent.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware/main/models/type-c-side-open.stl)

## Specifications

### Exact package

| | |
|---|---|
| Selection | Toolkit 392-OPMINIKVMTOOLKIT; Basic is a different bundle. |
| In the bag | Mini-KVM, quickstart, carry bag and extension-pin cap. |
| Video cable | 0.3 m HDMI male-to-male. |
| USB cables | 0.3 m C-to-A with A-female/C-male adapter; 1.5 m C-to-C with C-female/A-male adapter. |
| Size | 61 × 13.5 × 53 mm; 48 g for the device. |

### Connect and use

| | |
|---|---|
| Host side | Orange USB-C side → host with the 1.5 m cable; install Openterface first. |
| Target side | Black USB-C → target USB; target video → HDMI input. Target needs no Openterface app. |
| Video limit | Up to 3840 × 2160 at 30 Hz input; capture up to 1920 × 1080 at 30 Hz. |
| Audio | Captures embedded HDMI audio. |
| Power | USB power can come from either side. Use a dedicated supply for low-power targets such as Raspberry Pi. |
| Optional USB devices | Connection guide limits peripherals to 1.5 W and recommends externally powered hubs. |
| File transfer | The switchable USB-A port moves an attached drive between host and target. |
| Revision-specific control | USB-port switching through software needs hardware v1.9 or newer. |
| Practical limit | Some older BIOS implementations do not recognize the internal USB hub. |

### Software and design files

| | |
|---|---|
| Host downloads | Official apps for macOS, Windows, Linux and Android; select the host platform on the download page. |
| Firmware troubleshooting | The FAQ directs capture-firmware recovery to the QT releases. Follow the matching release instructions. |
| Hardware source | Schematics/design repository uses CERN-OHL-S-2.0; its documentation is declared CC BY-SA 4.0. |
| Useful outcome | A nearby laptop can provide the console for a headless SBC or mini-PC without a network KVM. |

## Documentation

- [Official Mini-KVM product](https://openterface.com/minikvm/)
- [Exact toolkit datasheet](https://docs.openterface.com/products/minikvm/datasheet/)
- [Cable and port guide](https://docs.openterface.com/products/minikvm/how-to-connect/)
- [Host application downloads](https://docs.openterface.com/app/kvm/)
- [Power, revision and firmware FAQ](https://docs.openterface.com/products/minikvm/faq/)
- [QT releases and recovery route](https://github.com/TechxArtisanStudio/Openterface_QT/releases)
- [Hardware repository and documentation license](https://github.com/TechxArtisanStudio/Openterface_Mini-KVM_Hardware)
- [Maker campaign and ordering](https://www.crowdsupply.com/techxartisan/openterface-mini-kvm)
- [Maker's media index](https://openterface.com/media/)

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Source: gadgets.sh · https://gadgets.sh/devices/openterface-mini-kvm-toolkit/ · JSON: https://gadgets.sh/api/v1/devices/openterface-mini-kvm-toolkit.json