[Home](./index.md) > [bitburner](./bitburner.md) > [NS](./bitburner.ns.md) > [readPort](./bitburner.ns.readport.md) ## NS.readPort() method Read data from a port. Signature: ```typescript readPort(port: number): PortData; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | port | number | | Returns: [PortData](./bitburner.portdata.md) The data read. ## Remarks RAM cost: 0 GB Read data from that port. A port is a serialized queue. This function will remove the first element from that queue and return it. If the queue is empty, then the string “NULL PORT DATA” will be returned.