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• On-board transceiver mounting tool and hex keys (3/32'' and 5/64'') 
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• Power cable
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• Thermal pads
• https://www.digikey.com/en/products/detail/laird-technologies-thermal-materials/A15896-04/2445455
• https://www.laird.com/products/thermal-interface-materials/gap-fillers/tflex-700/a15996-04

Thermal padding

Position two layers of thermal pad on top of the surface of the P&CB that is in contact with the cooling block (large connector side). Two inductors on this side will be visibly coming out from under the thermal pad. These chips have enough height to be in direct contact with the cooling block, and there is no margin for a thermal pad there. Gently remove the thermal pad from the top of the inductors until the inductor becomes visible. 

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As a final step, you need to close the cover without jeopardizing the cables. The covers may be stuck due to fitting issues, but another possible reason is that the cables are trapped somewhere, so proceed with extreme caution. The thick cable can be extended in all the available space. The Fiber optics can be rotated in a circle under the cover. Your final setup should now look like this.

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Congratulations. You are done.

References

• updated Updated figures can be found here referenceImages.pptx.
• Transceiver manual