Dell PowerConnect 26 User Manual page 3

10/100/1000 Ports Link/Activity (SPD/LNK/ACT) LED
Steady green — A 1000-Mbps link has been established, but no data is being transmitted or received.
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Blinking green — A 1000-Mbps link has been established and data is being transmitted or received.
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Steady amber — A 10-Mbps or 100-Mbps link has been established, but no data is being transmitted or received.
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Blinking amber — A 10-Mbps or 100-Mbps link has been established and data is being transmitted or received.
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Off — No link established.
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10/100/1000 Ports Duplex Mode/Collisions (FDX/HDX) LED
Steady green — The port is operating in full-duplex mode.
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Blinking green — Collisions are occurring on the port.
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Off — The port is operating in half-duplex mode.
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Figure 1-1. PowerConnect 2608
Figure 1-2. PowerConnect 2616
Figure 1-3. PowerConnect 2624