---
title: IOUSBDevReqOOLTO
framework: kernel
role: symbol
role_heading: Type Alias
path: kernel/iousbdevreqoolto
---

# IOUSBDevReqOOLTO

An internal structure to pass parameters between IOUSBLib and UserClient.

## Declaration

```occ
typedef struct IOUSBDevReqOOLTO IOUSBDevReqOOLTO;
```

## Topics

### Getting the Properties

- [bmRequestType](kernel/iousbdevreqoolto/1546443-bmrequesttype.md)
- [bRequest](kernel/iousbdevreqoolto/1546099-brequest.md)
- [wValue](kernel/iousbdevreqoolto/1546109-wvalue.md)
- [wIndex](kernel/iousbdevreqoolto/1545920-windex.md)
- [wLength](kernel/iousbdevreqoolto/1546286-wlength.md)
- [pData](kernel/iousbdevreqoolto/1546044-pdata.md)
- [wLenDone](kernel/iousbdevreqoolto/1546113-wlendone.md)
- [pipeRef](kernel/iousbdevreqoolto/1546157-piperef.md)
- [completionTimeout](kernel/iousbdevreqoolto/1546368-completiontimeout.md)
- [noDataTimeout](kernel/iousbdevreqoolto/1546132-nodatatimeout.md)

## See Also

### Device Requests

- [IOUSBDevReqOOL](kernel/iousbdevreqool.md)
- [IOUSBDevRequest](kernel/iousbdevrequest.md)
- [IOUSBDevRequestTO](kernel/iousbdevrequestto.md)
- [IOUSBDeviceRequest](kernel/iousbdevicerequest.md)
- [IOUSBDeviceRequestPtr](kernel/iousbdevicerequestptr.md)
- [IOUSBDeviceRequestSetSELData](kernel/iousbdevicerequestsetseldata.md)