DELL PC2748 User Manual

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to Managed Mode.  The chapter "Starting and Configuring the Dell™PowerConnect™ 
2708/2716/2724/2748 for Managed Mode Operation" explains how to set the switch to Managed 
Mode.
Site Requirements
The PowerConnect 2708/2716/2724/2748 devices can be mounted in a standard equipment rack, 
placed on a tabletop, or mounted on the wall.
Before installing the unit, verify that the site selected for the device meets the following site 
requirements:
Power — The device is installed within 1.5 m (5 feet) of a grounded, easily accessible outlet 
220/110 VAC, 50/60 Hz. If the device has two power supplies, the site should have two power 
outlets with different power feeders. 
General — Ensure that the power supply is correctly installed. 
Clearance — There is adequate frontal clearance for operator access. Allow clearance for 
cabling, power connections, and ventilation. 
Cabling — Cabling is routed to avoid sources of electrical noise such as radio transmitters, 
broadcast amplifiers, power lines, and fluorescent lighting fixtures. 
Ambient Requirements — The ambient unit operating temperature range is 0 to 45C (32 to 
113F) at a relative humidity of up to 95%, non-condensing. Verify that water or moisture 
cannot enter the device case.
Unpacking
 
NOTE: 
Before unpacking the device, inspect the packaging and report any evidence of damage 
immediately to Dell.
 
Safety
 
CAUTION: 
Never remove the cover on a power supply or any part that has the following label 
attached.
Figure 3-1. Caution Label
 
CAUTION: 
Hazardous voltage, current, and energy levels are present inside any component that has 
this label attached. There are no serviceable parts inside these components. If you suspect a problem 
with one of these parts, contact a service technician.