> For the complete documentation index, see [llms.txt](https://evoffer.gitbook.io/evoffer-installation-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://evoffer.gitbook.io/evoffer-installation-guide/display/model-s-x-fusionlink/variant-a-b-mark-1.0.md).

# Variant A/B MARK 1.0

## Packing List

1. FusionLink Board
2. Video Signal Cable
3. Touch Signal Cable x 2
4. Power and Signal Cable
5. Metal Rods (For MCU1)
6. Metal Rods (For MCU2)

## Installation

### 1. Take Out the MCU

Follow the instruction from Tesla to take out the MCU step by step.

{% embed url="<https://service.tesla.com/docs/ModelS/ServiceManual/en-us/GUID-06F1F7C7-7B2B-45FB-A6FC-0AE051DB944D.html>" %}

### 2. Install the Device

After taking out the MCU from the car, follow the following video to install the add-on board on the MCU.

{% embed url="<https://www.youtube.com/watch?v=7IyO8iIBOdA>" %}