> # Speed LEDs

> Each port has one link LED on the left and one speed LED on the right.

> The speed LED displays the speed of the port interface:

> - Off—The interface attached to that port is functioning at 1000 Mbps.
> - On (solid green)—The interface attached to that port is functioning at 2000 Mbps (for 2 Gbps interfaces).

> The speed LED also displays if the beacon mode is enabled or disabled:

> - Off or solid green—Beacon mode is disabled.
> - Flashing green—The beacon mode is enabled. The LED flashes at one-second intervals.

> Note Generation 2, Generation 3, and Generation 4 modules and fabric switches do not have speed LEDs.

> Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.