The present inventive subject matter provides an apparatus and system for power distribution management. For example, power distribution management is provided, comprising: detecting an establishment of a connection between a PDU outlet of a PDU and a device to be powered by the PDU; and causing the identification specific to the connection to be shared between the PDU and the device over optical communication in response to establishment of the connection. Corresponding system and power cable are also disclosed. According to embodiments of the present inventive subject matter, the connection relationship between any devices and PDU outlets can be determined efficiently and effectively by checking and matching the connection identifications.