> For the complete documentation index, see [llms.txt](https://cookiebunker.gitbook.io/cookiebunker/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cookiebunker.gitbook.io/cookiebunker/dma/1k-hdmi-fuser/1k-fuser-overview.md).

# 1K Fuser Overview

#### 💡 **Indicator Lights:**

* **\[D1]**: Power indicator (solid light when powered on)
* **\[D2]**: Fusion function indicator (solid light when fusion is on, off when fusion is off)
* **\[H2]**: DP secondary input signal indicator (solid light when functioning normally)
* **\[H1]**: DP primary input signal indicator (solid light when functioning normally)

***

#### ▶️ **Button Functions:**

* **Power**: Power switch
* **\[K1] Secondary Screen Mode** – Displays only the 2nd PC screen while disabling the main screen
* **\[K2] Main Screen Mode** – Displays only the main PC screen while disabling the 2nd screen.
* **\[K3] Fuser Activation & Adjustment** – Enables the fuser and allows adjustment of its strength (black level).
* **\[K4] Factory Reset & Re-engagement** – Restores factory settings and re-engages the fuser if needed.

***

<div data-with-frame="true"><figure><img src="/files/90c7f7f29bd8925ab02dc6f57a4de502196f5df6" alt=""><figcaption></figcaption></figure></div>

#### 🔌 **Port Guide:**

* **Output:** Connect to the primary display. (Only the fuser should connect to main monitor)
* **Input1:** Connect to the GPU of your main PC.
* **Input2:** Connect to the GPU of your secondary PC.
* **DC12V:** Power input.

***

### ✅ You're Done

You now have a basic understanding of the 1K HDMI Fuser and how the cables are connected.

{% hint style="info" %}
It is now recommended to begin the [**1K Fuser Setup**](https://docs.ducks-services.com/dma/1k-hdmi-fuser/1k-fuser-setup).
{% endhint %}