Communications device and board used in communications device

A communications device, comprising:

• a container, at least one power module, at least one temperature regulating module, and multiple boards, wherein the container is configured to accommodate the at least one temperature regulating module and the multiple boards;
• wherein:
• the container is further configured to accommodate a power bus layer;
• the power bus layer is connected to the at least one power module, the at least one temperature regulating module, and the multiple boards;
• the at least one power module is configured to supply power to the at least one temperature regulating module and the multiple boards by using the power bus layer;
• and
• at least part of communication among the multiple boards, the at least one power module, and the at least one temperature regulating module is performed in a power line communications manner by using the power bus layer;
• and wherein:
• the communications device further comprises multiple power connectors made of a rigid material, configured to connect the multiple boards, the at least one temperature regulating module, and the at least one power module to the power bus layer in a pluggable manner;
• the power bus layer comprises at least one long-strip-shaped power bus bar that has multiple tooth-like projections;
• and
• the power connectors are connected to the tooth-like projections on the power bus bar in the pluggable manner.