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port of the Switch (Switch A) to any of the 10Mbps, 100Mbps
(MDI-X) port of the other switch (switch B) or other devices.
1. The “100M LINK/ACT, 10M LINK/ACT” LED
indicator light green for hookup to 100Mbps speed or
light amber for hookup to 10Mbps speed.
2. The “10/100M FDX, 10/100M COL” LED indicator
depends upon switch’s capabilities for full-duplex or
half-duplex
Port Speed & Duplex Mode
After plugging the selected cable to a specific port, the
system uses auto-negotiation to determine the transmission
mode for any new twisted-pair connection:
If the attached device does not support auto-
negotiation or has auto-negotiation disabled
, an auto-
sensing process is initiated to select the speed and set the
duplex mode to
half-duplex
.