bitburner-src/markdown/bitburner.ns.readport.md

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[Home](./index.md) &gt; [bitburner](./bitburner.md) &gt; [NS](./bitburner.ns.md) &gt; [readPort](./bitburner.ns.readport.md)
## NS.readPort() method
Read data from a port.
**Signature:**
```typescript
readPort(portNumber: number): PortData;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| portNumber | number | Port to read from. Must be a positive integer. |
**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.