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What do the LEDs on the LOGOSCREEN nt network card mean?

recorders_t2q1

Network card LEDs and their status indicators:
Left LED (green):
Network speed
on ==> 100MB/s;
off ==> 10MB/s

Middle LED (red):
Link and activity LED
off ==> No connection;
on ==> Connected;
flashing ==> Connected and activity in the line

Right LED (green):
Operating mode
on ==> Full Duplex;
of ==> Half Duplex