// usbioctl.h

typedef union _USB_HUB_CAP_FLAGS {
  ULONG  ul;
  struct {
    ULONG HubIsHighSpeedCapable : 1;
    ULONG HubIsHighSpeed : 1;
    ULONG HubIsMultiTtCapable : 1;
    ULONG HubIsMultiTt : 1;
    ULONG HubIsRoot : 1;
    ULONG HubIsArmedWakeOnConnect : 1;
    ULONG HubIsBusPowered : 1;
    ULONG ReservedMBZ : 25;
  };
} USB_HUB_CAP_FLAGS, *PUSB_HUB_CAP_FLAGS;
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (ns-usbioctl-_usb_hub_cap_flags)

_USB_HUB_CAP_FLAGS structure

Description

The USB_HUB_CAP_FLAGS structure is used to report the capabilities of a hub.

Members

`ul`

A bitmask that represents the hub capabilities.

`HubIsHighSpeedCapable`

If TRUE, the hub is high speed-capable. This capability does not necessarily mean that the hub is operating at high speed

`HubIsHighSpeed`

If TRUE, the hub is high speed.

`HubIsMultiTtCapable`

If TRUE, the hub is capable of doing multiple transaction translations simultaneously.

`HubIsMultiTt`

If TRUE, the hub is configured to perform multiple transaction translations simultaneously.

`HubIsRoot`

If TRUE, the hub is the root hub.

`HubIsArmedWakeOnConnect`

If TRUE, the hub is armed to wake when a device is connected to the hub.

`HubIsBusPowered`

A boolean value that indicates whether the hub is bus-powered. TRUE, the hub is bus-powered; FALSE, the hub is self-powered.

`ReservedMBZ`

Reserved. Do not use.

USB_HUB_CAP_FLAGS - NtDoc