D-Link DES-1200M - Manual (Page 12)

DES-121T Gigabit 1000Base-T Switch Module
Figure 3. Gigabit 1000Base-T Switch Module Front View
DES-121T Gigabit 1000Base-T Switch Module Features
Compliant Gigabit Media Independent Interface (GMII )
1 X 100/1000Mbps N-Way auto-negotiation switch port
Automatic MDI crossover function
Up to 2.4Gbps Backplane forwarding rate
3MB memory buffer sharing
4K-entry Mac Address Table
Store-and-forward technology for abnormal packet filtering
Half-duplex and full-duplex modes supported
LED-indicators for 1000M Link, 100M Link, Activity, and
Full-duplex statuses
LED Indicators
The are 4 LED indicators for one RJ-45 connection port. If there
is no connection to a port, the corresponding LED indicators are
not lit.
LK1000 The LED indicator is green when the Port is linking
with 1000Mbps mode. When the port is operating in
10Mbps/100Mbps mode or not connected, the LED indicator
is not lit.
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