Rear Panel - D-Link DES-2212 User Manual

Rear Panel

Cooling Fans Used to control the temperature within the switch's
enclosure. When installing the switch, be sure not to block the fan
openings or otherwise restrict airflow.
MII Port Used for connecting Fast Ethernet transceivers, which can
be used for attaching other Fast Ethernet media such as 100BASE-FX
(fiber optic) or 100BASE-T4 (4-wire twisted pair).
The MII port is shared with Port 2. If you are using the MII port, then the
10BASE-T/100BASE-TX port labeled 2x cannot be used.
Power Connector Used for connecting the power cord.
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External Features