2-3
Installing the Hub
Installation Summary
Installing the
Hu
b
Installation Precautions
The following are power requirement precautions.
• If your installation requires a different power cord than the one supplied with the hub,
be sure to use a power cord displaying the mark of the safety agency that defines the
regulations for power cords in your country. The mark is your assurance that the power
cord can be used safely with the hub
• Do not install the hub in an environment where the operating ambient temperature might
exceed 55
°
C (131
°
F).
• The hub does not have a power switch; it is powered on when the power cord is plugged
in. The hub's power supply automatically adjusts to any AC power source between 100-
127 volts and 200-240 volts. There are no voltage range settings to configure.
• When installing the hub, note that the AC outlet must be installed near the equipment
and should be easily accessible.
The following are mounting precautions:
• The rack or cabinet should be adequately secured to prevent it from becoming unstable
and/or falling over. The hub should be mounted in a position toward the bottom of the
rack for stability and to make it easier to stack the other hubs on top.
• Before mounting a hub, plan its location and orientation relative to other devices and
equipment. Also consider the cabling that will be attached to the hub and the ports that
will be used. Verify that there is room for the grouped cables to trail out from the side of
the hub. Allow at least 2.54 cm (1 inch) in the front of the hub. In the back of the hub,
allow at least 3.8 cm (1 1/2 inches) of space for the power cord.
• Ensure that the HP 10/100Base-TX Hub does not overload the power circuits, wiring,
and over-current protection. To determine the possibility of overloading the supply
circuits, add together the amperage ratings from the nameplates of all your hubs (and
other equipment) installed on the same circuits and compare the total with the rating
limits for the supply circuits.
• Make sure that the power source circuits are properly grounded, then use the supplied
power cord to connect the HP 10/100Base-TX Hubs to the circuit. See the Safety
Statements in this chapter.
• Do not block airflow around the sides and the back of the unit.
Roadhw0.bk : ROADHW2.FM Page 3 Thursday, May 28, 1998 5:40 PM
