4
STACKABLE MINIHUB
The Stackable MiniHub’s RJ-45 ports support connection of up to eight
workstations or other network devices over full-length 10BASE-T cable
segments. Stackable MiniHubs fully comply with the IEEE 802.3 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 automatically partition
and reconnect individual ports in order to keep problems on one segment
from causing downtime elsewhere on the network.
Stackable MiniHubs have LINK and RX LEDs for each front-panel RJ-45
port, located above the corresponding ports (see the illustration below); one
LED to the left of the LINK LED for (and located above) the rear-panel AUI
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.
Figure 2-1. Front Panel of the Stackable MiniHub.
The included external wallmount power supply uses AC input power of
120 VAC/60 Hz (A models) or 230 VAC/50 Hz (AE models). Its lightweight
cord carries DC power to the barrel-type power jack on the rear panel (shown
in
Figure 2-2
) of the MiniHub.
