The "HwAddress" property

HwAddress  readable   s

Active hardware address of the device.

DEPRECATED. Use the "HwAddress" property in "org.freedesktop.NetworkManager.Device" instead which exists since version NetworkManager 1.24.0.

The "PermHwAddress" property

PermHwAddress  readable   s

Permanent hardware address of the device.

The "Speed" property

Speed  readable   u

Design speed of the device, in megabits/second (Mb/s).

The "S390Subchannels" property

S390Subchannels  readable   as

Array of S/390 subchannels for S/390 or z/Architecture devices.

The "Carrier" property

Carrier  readable   b

Indicates whether the physical carrier is found (e.g. whether a cable is plugged in or not).

DEPRECATED: check for the "carrier" flag in the "InterfaceFlags" property on the "org.freedesktop.NetworkManager.Device" interface.