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# IOUSBDeviceRequestSetSELData

The structure for receiving system exit latency values.

```
struct IOUSBDeviceRequestSetSELData;
```

## Overview

For information about the `Set SEL` request type, see section 9.4.12 of the USB 3.0 specification at <http://www.usb.org>.

## Topics

### Getting the SEL Data

[`uint8_t u1Sel;`](/documentation/USBDriverKit/IOUSBDeviceRequestSetSELData/u1Sel)

[`uint8_t u1Pel;`](/documentation/USBDriverKit/IOUSBDeviceRequestSetSELData/u1Pel)

[`uint16_t u2Sel;`](/documentation/USBDriverKit/IOUSBDeviceRequestSetSELData/u2Sel)

[`uint16_t u2Pel;`](/documentation/USBDriverKit/IOUSBDeviceRequestSetSELData/u2Pel)


---

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