---
title: wBytesPerInterval
framework: kernel
role: symbol
role_heading: Instance Property
path: kernel/iousbendpointproperties/1546060-wbytesperinterval
---

# wBytesPerInterval

The number of bytes per interval.

## Declaration

```occ
UInt16 wBytesPerInterval;
```

## Discussion

Discussion For SuperSpeed interrupt and isochronous endpoints, this is wBytesPerInterval from the SuperSpeed endpoint companion descriptor. For high-speed high-bandwidth isochronous endpoints, this is equal to wMaxPacketSize * (bMult+1).

## See Also

### Getting the Properties

- [bVersion](kernel/iousbendpointproperties/1546121-bversion.md)
- [bAlternateSetting](kernel/iousbendpointproperties/1546104-balternatesetting.md)
- [bDirection](kernel/iousbendpointproperties/1546544-bdirection.md)
- [bEndpointNumber](kernel/iousbendpointproperties/1546577-bendpointnumber.md)
- [bTransferType](kernel/iousbendpointproperties/1546085-btransfertype.md)
- [bUsageType](kernel/iousbendpointproperties/1545903-busagetype.md)
- [bSyncType](kernel/iousbendpointproperties/1546228-bsynctype.md)
- [bInterval](kernel/iousbendpointproperties/1546398-binterval.md)
- [wMaxPacketSize](kernel/iousbendpointproperties/1546100-wmaxpacketsize.md)
- [bMaxBurst](kernel/iousbendpointproperties/1546213-bmaxburst.md)
- [bMaxStreams](kernel/iousbendpointproperties/1546220-bmaxstreams.md)
- [bMult](kernel/iousbendpointproperties/1546456-bmult.md)