Switch 3870 — Rear View Detail 15
Switch 3870 — Rear View Detail
Figure 3 Switch 3870 — rear view
Expansion Module
Slot
You can use this slot to install an Expansion Module. Contact your
supplier for further information.
WARNING: When an Expansion Module is not installed, ensure the
blanking plate is fitted by tightening all screws with a suitable tool.
Power Socket Each Power Supply automatically adjusts its power setting to any power
voltage in the range 100-240 VAC.
Redundant Power
System Socket
To protect against internal power supply failure, you can use this socket
to connect the Switch to a SuperStack 3 Advanced Redundant Power
System. See “Connecting a Redundant Power Supply” on page 23.
Stacking Cable Ports You can use these ports to connect the following cables:
■Stacking Cable (3C17462) — which enables you to stack together
two switches up to three rack units apart.
■Resilient Stacking Cable (3C17463) — which enables you to stack
together two switches up to sixteen rack units apart.
You can stack together any combination of 3870 24 port and 48 port
units, up to a maximum of eight units.
For more information on how to connect a stacking cable to your switch
units, please refer to the Installation Guide that accompanies your cable.
Redundant Power System Socket
Power Socket
StackingCable Port (Down)
StackingCable Port (Up)
Expansion ModuleSlot
U
P
D
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DUA1745-0AAA03.book Page 15 Friday, April 8, 2005 12:34 PM