> For the complete documentation index, see [llms.txt](https://docs.jtokenapp.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.jtokenapp.com/4k-extender/specification/package.md).

# Package

## Package Contents

Please check carefully whether the following accessories are missing or damaged.

| No | Content                 | Quantity | Remark      |
| -- | ----------------------- | -------- | ----------- |
| 1  | Transmitter             | 1        | TX          |
| 2  | Receiver                | 1        | RX          |
| 3  | HDMI Cable              | 2        | Optional    |
| 4  | Power Adapter           | 2        | 12V         |
| 5  | Ethernet Cable          | 1        | For pairing |
| 6  | IR Transmitter(W/Cable) | 1        | Large head  |
| 7  | IR Receiver(W/Cable)    | 1        | Small head  |

{% hint style="danger" %}
:man\_mage: **Tips**: If the user needs infrared remote control, do not insert the infrared receiver or transmitter incorrectly, otherwise it will cause burnout. The correct insertion method is: the small head used for transmitter (transmitting signals to the infrared receiving device) should be inserted into "IR OUT" of Transmitter, the large head used for receiver should be inserted into "IR IN" of Receiver.
{% endhint %}