Enterasys Mid-Span Power Hub, User Manual, Page: 19 / 28

Technical Considerations
Mid-Span Power Hub 24-Port User’s Guide 2-3
Technical Considerations
The Enterasys Networks 24-port Mid-Span Power Hub may be placed on a shelf or
mounted in a standard 48.26-centimeter (19-inch) rack.
Before you mount the unit to a fixed location, consider the following:
• Determine optimal placement.
• Collect and document network information as required.
• Ensure that the length of cable from the Ethernet network source to the powered
device does not exceed 100 meters.
• This unit is intended for installation in a wiring closet.
• Connect the unit to a grounding type AC outlet (100-240 VAC), using the standard
power cord shipped with the unit, or a user-supplied UPS (uniterruptible power
supply).
• Allow for easy access to disconnect the unit from the AC outlet if necessary.
• Do not cover the unit or block the airflow with any other objects. Keep the unit away
from excessive heat, humidity, vibration, and dust.
• Ensure that installation conforms to local regulations.
Configuration for the 24-Port Mid-Span Power Hub
Figure 2-2 shows a typical configuration for the Enterasys 24-port Mid-Span Power Hub
operating with 802.3af appliances. To ensure EMC compliance and compliance with
Class A requirements, use Category 5, 5e, or 6 shielded twisted pair straight-through
cables.
Note: The unit is not a repeater and does not amplify the Ethernet data signal.
Caution: Observe the following requirements when mounting the Enterasys Networks
24-port Mid-Span Power Hub: