In some examples, the electric or electro-optical device 720 includes a module board 721 which has a heat generating component 722 formed therein or attached thereto. The heat generating component 722 may be, for example, an electro-optical transceiver, or a logic device with integrated electro-optical transceiver. A logic device may be a computing device or a network switching device. A computing device may perform functions such as general purpose computing, application-specific acceleration, security processing, machine learning, artificial intelligence, etc.
The electric or electro-optical device 720 may also include a thermal interface 723, which may be used to cool the device 720. The thermal interface 723 may be, for example, a heat spreader or other thermal transfer device in contact with the heat generating component 722. As another example, the thermal interface 723 may be, for example, a surface of the heat generating component 722 or another component of the electric or electro-optical device 720. The electric or electro-optical device 720 may also include an electrical connector 724 to connect to the connector 602 of the bay.
In some examples, the module 700 may also include one or multiple external connectors 740, which may enable connections to cables such as optical and/or electric cables. The external connectors 740 may be optically or electrically coupled to the heat generating component 722.