3Com 3C16405, User Manual

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DUA1640-5AAA02
3-14
C
HAPTER
3: U
SING THE
PS H
UB
Using Cascade Cables
To connect PS Hubs together, using Cascade cables:
1 Position the units as required; rack mounting or wall mounting them as
necessary.
2 Starting with the bottom unit, using a cascade cable:
■
Connect the cable’s connector marked UP to the UP port on the
unit.
■
Connect the cable’s connector marked DOWN to the DOWN port on
the unit directly above it.
Secure the cable in place by tightening its captive screws as tight as
possible by hand.
3 Continue up the stack, repeating step 2 for each unit, as shown in
Figure 3-5.
Figure 3-5
Connecting PS Hubs Together
DOWN
DOWN
UP
UP