A pluggable optical transceiver comprising a main body, an optical sub-assembly, an operation indicator assembly, a circuit board, a main body covering, and a rotatable locking assembly is provided. The optical sub-assembly, operation indicator assembly, and circuit board are electrically coupled and positioned within an optical fiber opening and electrical connector opening of the main body, respectively. The rotatable locking assembly is configured to release the pluggable optical transceiver from communications equipment. The operation indicator assembly has a flexible printed circuit board, at least a circuit board metalized pad, and at least a light-emitting element. The light-emitting element emits light at the optical fiber opening on an operation indicator side of the main body, for visually recognizing an operational status of the pluggable optical transceiver.