Country Of Use; External Antennas; External Antennas; Power Supply - HP msm4 series Installation And Getting Started Manual

MSM422
Important information to read before installing

Country of use

In some regions, you are prompted to select the country of use during setup. Once the
country has been set, the MSM422 will automatically limit the available wireless channels,
ensuring compliant operation in the selected country. Entering the incorrect country may
result in illegal operation and may cause harmful interference to other systems.

External antennas

Caution
When using an external antenna, depending on the country of use, the antenna selected, and
your radio settings, it may be mandatory to reduce the radio transmission power level to
maintain regulatory compliance. For specific power limits for your country, consult the
Antenna Power-Level Setting Guide (for MSM Products) available from
www.hp.com/networking/support
To set the radio power transmission level, for controlled access points see Transmit power
control in the MSM7xx Controllers Management and Configuration Guide. For autonomous
access points, see Transmit power control in the MSM3xx / MSM4xx Access Points
Management and Configuration Guide.

Power supply

The MSM422 is intended to have its power supplied by a Listed Information Technology
Equipment AC Adapter, Wall Industries Inc., Model GPSU30A-8, rated output 33-50 Vdc, 0.91-
0.61 A, available as HP part number J9406A. As an alternative, the MSM422 may be connected
to an external PoE source.

Safety

Take note of the following safety information during installation.
 If your network covers an area served by more than one power distribution system, be
sure all safety grounds are securely interconnected.
 Network cables may occasionally be subject to hazardous transient voltages (caused by
lightning or disturbances in the electrical power grid).
 Handle exposed metal components of the network with caution.
 The MSM422 is powered-on when the Ethernet port is plugged into a PoE power source
or when an external power supply is connected.
 The MSM422 and all interconnected equipment must be installed indoors within the same
building (except for outdoor models/antennas), including all PoE-powered network
connections as described by Environment A of the IEEE 802.3af standard.
3-8
and for Product Brand, select ProCurve.