2-5
Cisco 170 Series Hardware Installation Guide
OL-28365-01
Chapter
Power Supply Considerations
The Cisco 170 series hardware operates on AC power and supports the ability to restore the previous
power state of the system in the event that AC power is lost. Be aware of the following when interacting
with system hardware:
• The Cisco 170 series appliance requires 50 seconds from the time that AC power is applied before
the power state can be updated and stored. This means that any changes to the power state within
the first 50 seconds of applying AC power will not be observed if AC power is removed within that
time.
• The Cisco 170 series appliance requires 10 seconds from the time it is placed into standby mode
before the power state can be updated and stored. This means any changes to the power state within
the first 10 seconds of entering standby mode (including the standby mode itself) will not be
observed if AC power is removed within that time.
Observe the following considerations:
• Check the power at the site before installing the appliance to ensure that the power is “clean” (free
of spikes and noise). Install a power conditioner, if necessary, to ensure proper voltages and power
levels in the source voltage.
• Install proper grounding for the site to avoid damage from lightning and power surges.
• The Cisco 170 series appliance does not have a user-selectable operating range. Refer to the label
on the appliance for the correct AC-input power requirement.
• Several styles of AC-input power supply cords are available; make sure that you have the correct
style for your site.
• Install an uninterruptible power source for your site, if possible.
You also need to provide power to the switch with the appropriate AC power cord for your location.
Table 2-1 lists the power cords that are used with the AC power supply.
Table 2-1 AC-Input Power Cord Options
Locale Part Number Length Plug Rating Plug Type
300 W AC Power Supply
Appliance Coupler
North America CAB-AC (72-0259) 8.2 ft (2.5 m) 125 VAC, 10 A
Australia, CAB-ACA
(72-0746-01)
8.2 ft (2.5 m) 250 VAC, 10 A
Europe (except
Italy)
CAB-ACE (72-0460) 8.2 ft (2.5 m) 250 VAC, 10 A
120352
120354
120356
120357