Dell PowerConnect 2124 Guide D'utilisation page 17

16 Introduction
Redundant Power System (RPS) LED
• Green — The redundant power system is connected and working
properly.
• Red — The redundant power system is connected, but failed.
• Off — The redundant power system is not connected.
Gigabit (1000) LED
• Green — A 1000-Mbps link is established.
• Off — No 1000-Mbps link is established.
Fast Ethernet (100) LED
• Green — A 100-Mbps link is established.
• Off — No 100-Mbps link is established.
Link/Activity (LNK/ACT) LED
• Green — A link has been established.
• Blinking Green — A link has been established and data is being
transmitted or received.
• Off — No link established.
Duplex Mode/Collisions (FDX/COL) LED
• Green — The port is operating in full-duplex mode.
• Blinking Green — The port is operating in half-duplex mode and
collisions are occurring.
• Off — The port is operating in half-duplex mode and no collisions are
occurring.