Black Box LE2690A, Руководство пользователя, Страница: 9 / 22

4
9-PORT PERSONAL MINIHUB
specification for repeater functionality: They perform signal amplification,
retiming of data packets, and regeneration of preamble bits for each packet
received. They will also detect collisions, extend collision fragments, and
automatially partition and reconnect individual ports in order to keep
problems on one segment from causing downtime elsewhere on the
network.
Personal MiniHubs have LINK and RX LEDs for each front-panel RJ-45
port, located above the corresponding ports (see the illustration below), one
LINK LED for (and located above) the rear-panel port, and one LED for
AC power located at the rear above the external power-supply connection.
This makes observing the operation and status of the ports easy.
The included extemal wallmount power supply uses AC input power of
120 VAC/60 Hz. Its lightweight cord carries DC power to the barrel-type
power jack on the rear panel (shown below) of the MiniHub.
2.2 Features and Benefits
•
Interconnectability with Existing Ethernet Networks
Your 9-Port Personal MiniHub has a manual Up-Link switch that you
can use to cross the pinning of its rear port. In this setting, you can
connect 10BASE-T cable from an existing Ethernet environment (such
as the central hub for the building) to the MiniHub’s rear port.
•
Interoperability with Other Ethernet Devices
Personal MiniHubs are completely interoperable with other Ethernet-
compliant network devices. Each is fully compliant with IEEE 802.3
specifications for 10 Mbps CSMA/CD operation. This allows Personal
MiniHubs to be integrated into any standard Ethernet network.
Front-
panel
ports
Power
Jack
Rear-Panel
Port
Up-Link
Switch
LEDs