Nortel Networks 1000ASE-XD - Manual (Page 30)

30 Chapter 1 BayStack 420 Switch
209418-A
Back panel
The switch back panel is shown in Figure 4 . Table 3 describes the components on
the back panel.
Figure 4 BayStack 420 Switch back panel
Cascade Up and Down connectors
The Cascade Up and Down connectors allow the switch to be connected to the
upstream unit’s Cascade Up connector, or to the downstream unit’s Cascade
Down connector (see
“Stack configurations” on page 51 .)
Cooling fans
Two cooling fans are located on one side of the BayStack 420 Switch to provide
cooling for the internal components. (See
Figure 1 on page 25 .) When you install
the switch, be sure to allow enough space on both sides of the switch for adequate
air flow. See Installing the BayStack 420 10/100/1000 Switch for detailed
information.
Table 3 Components on the BayStack 420 Switch back panel
Item Description
1 AC power receptacle
2 Cascade Up and Down Connectors
9992EA
100-240 V-
50-60Hz 2A
1 2
Cascade
Out In