---
title: kSCSIProtocolFeature_MaximumWriteTransferByteCount
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1638592-anonymous/kscsiprotocolfeature_maximumwritetransferbytecount
---

# kSCSIProtocolFeature_MaximumWriteTransferByteCount

## Declaration

```occ
kSCSIProtocolFeature_MaximumWriteTransferByteCount = 9
```

## Discussion

Discussion If the SCSI Protocol Services Driver has a maximum byte count that can be transferred in a write request, it will return true to this query and return the byte count in the UInt64 pointer that is passed in as the serviceValue.