Abstract: A Bluetooth adapter having rotatable audio plugs includes a housing, a control circuit board, and a power supply unit. The overall structure is compact and reasonable. The Bluetooth adapter is small in size and convenient to take along. When it is necessary to rotate the two audio plugs for use, the right sound channel of the stereo sound channels of the first audio plug can be switched off (that is, only the left sound channel), and the right sound channel of the second audio plug can be used to realize the stereo sound channels, suitable for two audio output ports provided on the seat of the airplane. The Bluetooth adapter is easy to use, has strong compatibility, and improves the overall sound effect.

Abstract: A multi-connector power or power and signal transmission cable includes a connection cable, a first connection head connected to one end of the connection cable and at least one connector to mate with the first connection head. The first connection head includes a first plug at a front end thereof. The connector includes a second plug and a socket at front and rear ends thereof. The first plug is detachably connected to the socket of the connector. The connector includes a connection arm thereon. The connection arm has a protruding block at a distal end thereof. The first connection head has a pivot hole for connection of a rotation disc. The rotation disc includes a rotation axle and a receiving hole on the top end of the rotation axle. The connection arm of the connector is detachably connected to the receiving hole of the first connection head.

Abstract: A multi-connector power or power and signal transmission cable includes a connection cable, a first connection head connected to one end of the connection cable and at least one connector to mate with the first connection head. The first connection head includes a first plug at a front end thereof. The connector includes a second plug and a socket at front and rear ends thereof. The first plug is detachably connected to the socket of the connector. The connector includes a connection arm thereon. The connection arm has a protruding block at a distal end thereof. The first connection head has a pivot hole for connection of a rotation disc. The rotation disc includes a rotation axle and a receiving hole on the top end of the rotation axle. The connection arm of the connector is detachably connected to the receiving hole of the first connection head.