---
name: "nvme_mi_port_prtcap-libnvme3"
section: "2"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme_mi_port_prtcap-libnvme3"
---

# nvme\_mi\_port\_prtcap-libnvme3(2)

Port Information Data Structure - Port Capabilities (PRTCAP)

## NAME

enum nvme\_mi\_port\_prtcap - Port Information Data Structure - Port Capabilities (PRTCAP)

## SYNOPSIS

enum nvme\_mi\_port\_prtcap {\
     **NVME\_MI\_PORT\_PRTCAP\_CIAPS** , \
\
     **NVME\_MI\_PORT\_PRTCAP\_AEMS**

};

## Constants

- NVME\_MI\_PORT\_PRTCAP\_CIAPS

  Command Initiated Auto Pause Supported: obsolete as of NVMe-MI 2.2 and later (the Command Initiated Auto Pause bit in Command Messages is always supported); this bit is set to '1'.

- NVME\_MI\_PORT\_PRTCAP\_AEMS

  Asynchronous Event Messages Supported: if set, then all Management Endpoints on this port support AEMs and the Asynchronous Event configuration (Configuration Identifier 04h).