Shenzhen Big Tree Technology Co., Ltd.
BIGTREETECH
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4. Use tweezers to slowly lift the antenna connector highlighted in 1 to disconnect
it from CB1. Then remove CB1.
5. Install CM4 on Pad7 by aligning their BTB connectors and pressing down.
Please note that CM4 should be installed in the direction shown in the figure
below;
Plug the antenna connector in the place highlighted in 2.