Dell PowerConnect 54 Series, User Manual

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Hardware Description
Figure 2-2. Device Back Panel
On the device back panel are two power supply connectors and an RS-232 Console port. For general use
there is an AC Power Supply connector which is connectable to either 110V or 220V power supplies.
The DC Power Supply connector is to connect a Redundant Power Supply (RPS) to be activated
automatically in the event of an AC power supply outage.
Device Ports
SFP Ports
The Small Form Factor Plugable (SFP) port is a hot swappable optical modular transceiver that offers high
speed and compactness, which is designated as 1000Base-SX or LX.
RS-232 Console Port
One DB-9 connector for a serial terminal connection which is used for debugging, software download, etc.
The default baud rate is 9600 bps. The baud rate can be configured from 2400 bps up to 38400 bps.
Figure 2-3. Console Port
Combo Ports
A combo port is a single logical port with two physical connections:
• A RJ-45 connection for Twisted Pair copper cabling
• A SFP connection for various fiber-based modules
Only one of the two physical connections of a combo port may be used at any one time. Port features and
available port controls are determined by the physical connection used.
The system automatically detects the media used on a combo port, and utilizes this information in all
operations and control interfaces.
If both RJ-45 and SFP are present, and a connector is inserted in the SFP port, the SFP port is active, unless
the copper connector of the Base-T port of the same number is inserted and has a link.
The system can switch from the RJ-45 to the SFP (or vice-versa) without a system reboot or reset.