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21
Chapter 2: Installation tasks
2. Position the first hub on a table or desktop as directed by the
customer. Stack the remaining hubs on top of the first hub. Ensure
the adhesive rubber pads on the underside of a hub align with the
recesses on the top of the hub below.
3. To daisy-chain (connect) the hubs:
a. To connect the top and middle stacked hubs, connect an RJ-45
patch cable to port
24
of the top hub, then connect the cable to
port
12
of the middle hub.
b. To connect the bottom and middle stacked hubs, connect a
second RJ-45 patch cable to port
24
of the middle hub, then
connect the cable to port
12
of the bottom hub.
c. As shown in
Figure 8
(
1
and
2
), use a pointed instrument to set
the medium-dependent interface (MDI) switch on the top and
middle hubs to
MDI
(in). As shown in
Figure 8
(
3
), set the
MDI switch on the bottom hub to
MDIX
(out).
NOTE:
To connect two hubs, use middle and bottom hub instructions
only.
Figure 8
Patch cable and MDI selector configuration
4. Connect a power cord to an AC power strip and the receptacle at
the rear of each hub. Use an extension cord if required.
i140M015
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2
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